If statement for user input The only native batch command to do that is CHOICE, but that is not native to XP. So, if you run this program and type your full name, it will only output your first name. For the program to work, I need to know how to combine user input (cin) with if statements, for example, something like: If the user enters an invalid input, how can I code it so that it asks for input again and goes back outputs the right section (without re-using a ton of code)? Learn how to use JavaScript if/else statements with examples and explanations. , "Enter your age:"). For example “-” is an operator that represents subtraction just like “*” is an operator that represents Jun 20, 2019 · The Console. For the program to work, I need to know how to combine user input (cin) with if statements, for example, something like: Aug 29, 2024 · Table of Contents What is the IF-then statement IF-THEN statements in Excel refer to the IF function of Excel. Additional input validation could be added to address this. I In the world of programming, decision-making is a crucial aspect of creating dynamic and responsive code. By default, input () always returns data as a string, even if you enter numbers. Jan 5, 2016 · So, I'm making a text based puzzle game using Python for my programming class (we are forced to use python), so instead of having the user say something simple like 1 or 2, I want the program to de Apr 24, 2013 · I'm fairly new to the C++ language, and I've been having difficulty with user-input in relation to if statements. Jan 21, 2017 · that loop will re-ask for input if check is not 2, i. Aug 29, 2018 · So that the program will print the sequential if statement, but is seems that program is not recognizing the input, because it keep printing only else statement. Unfortunately, this statement only takes the first word of input, and leaves the rest for the next input statement. I have tried: Dec 8, 2021 · You have to use while true with if statement for multiple-choice input in Python. In this tutorial, we will learn about Python ifelse statements with the help of examples. if theuser Oct 31, 2010 · I'm making a small program that uses a if else statement, but instead of using numbers to control the flow i want to be able to make the control work with with yes and no; for example: cout &lt;& 8INPUT VALIDATION Input validation code checks that values entered by the user, such as text from the input () function, are formatted correctly. Java Conditions and If Statements Conditions and if statements let you control the flow of your program - deciding which code runs, and which code is skipped. Jul 27, 2022 · 0 I am trying to print a certain output if the user's input (greet) begins with a certain word "hello" else if the input begins with h using the if statement. For example, if you want users to enter their ages, your code shouldn’t accept nonsensical answers such as negative numbers (which are outside the range of acceptable integers) or words (which are the wrong data type). chatGPT, BARD, GPT4 etc) to create forum answers is not permitted. Here are IF Function examples for all data types. cin is a predefined variable that reads data from the keyboard with the extraction operator (>>). Nov 2, 2017 · User input if, else if statement. I'm just not sure how to place another if inside the The Java ifelse statement is used to run a block of code under a certain condition and another block of code under another condition. Use continue when you get bad input, and break out of the loop when you're satisfied. When it comes to user input, these loops can be used to prompt the user for input and process the input based on certain conditions. We'll close by introducing if statements, an extremely Mar 24, 2023 · If you were dealing with, for example, a user's search input, it would then depend on how the data we're searching through is stored. Remove the input from the if statement, here you're checking if variable equals value. Nov 2, 2010 · 1 If anyone else comes up with this question, i've written a program, that keeps asking to input a number, if user's input is not integer, and finishes when an integer number is accepted Aug 8, 2016 · If the user inputs an invalid entry, how can I make it so that the program restarts and says something like "invalid entry try again"? Mar 6, 2023 · The scanf() function is a commonly used input function in the C programming language. Assuming that a user enters 10, 20, and 30 as input values one after another, separated by spaces, what is the output of the following code snippet? int num1 = 0; Dec 4, 2017 · Text input with IF statements Asked 7 years, 11 months ago Modified 7 years, 11 months ago Viewed 4k times May 30, 2024 · Handling User Input with Control Structures After that we have user input, we often need to validate it and ensure that it meets our program requirements. 1 day ago · 4. The most common stream objects are - cin : for taking input, cout : for displaying output VBA Input Box and If Statement - Catching user misspellings Asked 9 years, 9 months ago Modified 9 years, 9 months ago Viewed 8k times Jun 21, 2025 · The switch statement is a control structure in JavaScript that allows you to execute different blocks of code based on the value of a single expression. Output stream: Data flows from memory to an output device (like the screen). I've tried a do while loop and I am currently using a while loop for the program. For example: Jan 28, 2017 · I can't seem to figure out what's wrong with this. if water == 'off': do_something() To stop the function if the user inputs 'off', you can use return False. Taking user input Aug 30, 2016 · User input if statements in Java not working Asked 9 years, 2 months ago Modified 9 years, 2 months ago Viewed 22k times Jun 6, 2013 · Yes and No are not defined, they should be in quote as they are string. Input waits for user interaction, but you're already did that. It allows you to read input from the user or from a file and store that input in variables of different data types. It compiles fine, but no matter what I put in, be it yes or no, it skips over the "let's begin" line and goes straight to the end. Example Get your own Python Server Ask for the user's name and print it: 1 day ago · By combining Python’s conditional logic (if statements) with templating engines, you can dynamically inject these CSS classes into your form elements *after validating user input on the server side*. #Make the calculating func def data_cal (): pennies = int (input ("What's your pennies?")) doll Mar 2, 2023 · Most programs work on data that is passed to them via files, APIs, databases or user input. This input is a name and if it's a string, the output should be the text 'What a beautiful name you have' and if it is a int or a float, the output should be 'Sorry , please enter a name'. nextLine (); after your nextInt () statement. However, if we allow users to input multiple lines of data, we should know when the user has given all the data that we should accept. The following example asks for your name, and when you enter a name, it gets printed on the screen: Aug 25, 2012 · Note that if the input to user_input is not a number and int() fails your program will crash (throw an exception). util package. Jul 10, 2025 · It is the most basic form of conditional input. 2. Oct 9, 2019 · I just learn my first python and try to make a continuous loop that has a user input condition. Think of it like real life: If it rains, take an umbrella. What is the optimal way in which one would validate and handle invalid input for something like the following example? def… Which of the following statements can be used to validate that the user input for the guess variable is between 1 and 10 inclusive? if (guess >= 1 && guess <= 10) Feb 23, 2021 · In our last two tutorials we discussed creating a new C# project and the concepts of variables and expressions as we moved towards programming our first application: a Guess the Number Game. these control structures are if statements, while loops and exception handling. COllect multiple inputs in single line The game prompts the user with a question, accepts the user’s answer, and calculates what response should be provided. This means if statements work hand-in-hand with boolean values: Feb 7, 2025 · In Python programming, user input plays a crucial role in creating interactive applications. You will learn how to create an 'If then' formula for text, numbers, dates, blank cells as well as how to write multiple IF statements. Feb 16, 2018 · I am trying to have a user input whether or not they like spicy food and the output is supposed to be a boolean but I don't seem to be getting an output with my code below: def likes_spicyfood(): Nov 10, 2017 · My code is attached. I'm trying to create a simple script that will will ask a question to which the user will input an answer (Or a prompt with selectable answers could appear?), and the program would output a response based on the input. Oct 17, 2002 · Hello, I would like to write an if statement that prompts the user when the data input into a field is not within the expected range. This kind of input is needed in quite a few applications, Mar 6, 2025 · Learn how to use if/else statements in Python with step-by-step examples, best practices, and common mistakes to avoid. Check if the input value is valid on each iteration. abc,12) or if it is 1 (when user forgot comma or enter not a number after comma, e. I am in my first intro CS class and I cannot figure out how to get a loop to restart in the following code following the last elif statement: Create a variable for the user input looking up a course. Sample output with input: 3 Value of num_tickets: 1 user_tickets = int (input ()) if user_tickets & Nov 30, 2023 · You can use the in operator to simplify your if-else statements and avoid writing multiple or conditions. import random roll = random. 79 votes, 51 comments. After receiving input from user, programmer uses an if statement to check a condition and provides different responses based on whether condition is true or false. If the outcome of the test is true, the set of statements in the first indented block gets executed. I remember something similar to this happening my freshman year and adding the nextLine () solved it. Jul 23, 2025 · In Python, for and while loops are used to iterate over a sequence of elements or to execute a block of code repeatedly. A commonly used approach is we check the Now that you are familiar with Python's input() function, let's utilize a user's input to decide which lines of code will run. For example, suppose you want to check if a user’s input is a valid choice from a list Apr 4, 2014 · If you want the user to give you another input, put the statement that inputs input inside the loop, instead of outside. Nov 13, 2025 · One of its most essential features is **conditional if statements**, which let you control what content is displayed based on specific conditions. if the user input is given as False, print Wrong. the computer was invented in 1822:1, if the user input is given as True, print Correct. lower() or . How would I make it so the user only has to type heal once? if (input () == "hunt"): print ("You encountered a slime! What would you like to do?") elif (input Jul 9, 2023 · The Power Apps IF function performs a logical comparison to see if the result is true. Apr 30, 2014 · In python is there a way to redo a raw input and if statement if the answer is invalid? So for instance if you ask the user to guess 1 or 2, and they guess 3 you create the additional elif or else Feb 28, 2012 · Is there a possibility of performing an if statement following an user input. Apr 12, 2014 · How do I assign multiple inputs into one if/else statement Example: May 12, 2022 · By Andre via Discussions on Python. If the latter is the case, then we'd simply have to add . Python has a built-in function called input that facilitates reading data directly from users. #include&lt;st Apr 22, 2025 · Mastering if Statements in Python Introduction In Python programming, the if statement is a fundamental control structure that allows you to make decisions in your code. For example, the program could ask the user to enter yes or no, and the actual value that is entered could be checked by an if statement. Aug 30, 2022 · I'm trying to perform user validation using if statements but on testing using post man, I keep on getting only the first return statement 'Email is required ' even after adding a valid email addre Working with the if Statement Snippet 3. These streams are defined in the <iostream> header file. To use the Scanner class, create an object of the class and use any of the available methods found in the Scanner class documentation. Then we print the value of x: You might consider explicit prompting: -p and specifying 1-character-input -n1 which allows to insert y without ENTER. May 30, 2024 · Python provides different control structures to handle user input and ensure that it meets our requirements. In this article, we'll learn to test conditions using if statement in C#. How would I make it so the user only has to type heal once? if (input () == "hunt"): print ("You encountered a slime! What would you like to do?") elif (input Working with the if Statement Aim We have recently walked through a simple if statement block that results to a value based on the input given. Otherwise, do nothing. Jan 8, 2024 · In Java, we can read data from user input using the Scanner class. This tutorial covers the C# if statement and also covers if else statement. It’s a cleaner, more readable alternative to multiple ifelse if statements when you need to compare one variable against many possible values. • If the user inputs FALSE, print out Incorrect. It waits for the user to type something on keyboard and once user presses Enter, it returns the value. Learn how to effectively use if-else statements with string input from users in your code. The concept of an selection statement is introduced the next section. Learn more about if, input, user input, choice menu, if statement, txt open Java User Input The Scanner class is used to get user input, and it is found in the java. Check if the provided value is equal to the strings True or False. Jul 15, 2021 · If user_tickets is less than 5, assign 1 to num_tickets. Every if statement needs a condition that results in true or false. For example, the Apr 9, 2024 · # Taking user input boolean (True/False) values in Python To take user input boolean values: Use the input() function to take input from the user. Whether you type letters, numbers, or symbols, Python always stores it as a string by default. User input is captured using the `input()` function, allowing the May 23, 2023 · The tutorial explains the syntax and basic uses of the IF function in Excel. util. if-statement I'm trying to create a simple script that will will ask a question to which the user will input an answer (Or a prompt with selectable answers could appear?), and the program would output a response based on the input. Bash if-else Statement The basic syntax of an `if-else` statement in Bash: #!/bin/bash if [ condition ]; then Apr 14, 2005 · [SOLVED] If Statement: want user to be able to enter text in cell if FALSE The use of AI tools (e. Oct 9, 2025 · In C++, data is read and written using streams, which are sequences of bytes. Whether you're writing a simple script to check user input or a complex algorithm, understanding how to use if statements effectively is C++ User Input You have already learned that cout is used to output (print) values. Perform an action if either condition is met. nextLine() in the first if statement consumes the input, whether the input equals cro or not. 11 Modify this block as follows: • The user prompt should be Return TRUE FALSE: Python3 was released in 2008: • If the user inputs TRUE, print out Correct. Also if your age is fixed i don't think the while loop is necessary you can directly do if elif. course = input ('Enter the course number you are trying to look Aug 18, 2014 · I want the $delivery in the top input to change value depending on the value on another variable I'm using. Follow step-by-step examples, code samples, and explanations for beginners and professionals. Let’s get right into it. For exampl: Jun 13, 2021 · If they're not an existing user, they're prompted to create a username and password. Get expert tips and code examples. In this blog, we’ll explore how to use Python if statements to conditionally add classes like `has-success` and `has-feedback` to form elements. g. This MATLAB function displays the text in prompt and waits for the user to input a value and press the Return key. Input is an essential part of most programs, an Apr 17, 2023 · In this tutorial, we’ll be creating a simple calculator using only the conditional statements in python, that is; the if, elif and else statements. User Input and For Loops in Python Below are some of Jan 9, 2024 · Use python input() function to ask user for input in Python. It also covers logical and relation operators such as and, not, equal to. Multiple choice needed multiple if-else statements. 1. In this tutorial, we will learn about the Python input () function with the help of examples. In other words, we need an event to know when we should stop reading from user input. Sep 8, 2024 · File handling and user input are essential skills in Python, enabling programs to interact with users and manage data effectively. In our example, we will use the nextLine() method, which is used to read Strings: Jul 23, 2025 · Input validation ensures that data entered by the user is correct, safe, and in the expected format. 4. than you should take input inside the while loop. Jan 29, 2021 · In this lab, you review basic Python programming skills including data types, variables, lists, dictionaries, user input, if statements, for and while loops, and file access. org at 12May2022 02:38: I’m sorry, I am a complete noob to programming and the python language. In this part, I will be explaining operators, user input, and if/else statements in detail. This blog post will Jan 11, 2023 · User input age value greater than or equal to 55: It will run second if block and break statement helps to terminate while loop. For example: Dec 21, 2022 · Python’s if statement explained: execute code conditionally Introduction Evaluate and decide: if statement Default pattern Two options of every if Python example programs Compare variable with if statement Compare string with if statement Find text files with if statement Evaluate user input with if statement Other Python if statements Summary These conditions may be affected by user's input, time factor, current environment where the program is running, etc. But no matter what the answer was, it would always just start the input function. It allows programs to receive data from the user during runtime, enabling a more dynamic and personalized user experience. Else, assign user_tickets to num_tickets. I've looked online for a solution, but to my surprise I couldn't find it. Aug 8, 2025 · In the example above of how to use Java’s Scanner for user input, the import statement is at the start of the code, along with the creation of an instance of the Scanner with the new keyword. Most of the time with things like this it would be all lowercase or how we would normally write & capitalize things. Oct 29, 2021 · What if I'm using an if statement where I want the if condition to be met if the string being compared has only a part of the actual string Mar 3, 2022 · Are you a beginner in Python? If so, this tutorial is for you! We explain what conditional statements are, why they are important, the different types of statements, and how to work with them. In this tutorial, we'll expand our bag of tools to get text from the user, interpret it as a number and perform some basic mathematics with it. upper() to both the user's input and the string we're comparing it to. I have gotten this far. If the user enters 'y' the loop will go again, if they enter 'n' it will display a goodbye message. You can graft on the try/except code shown below to deal with that if necessary. Collect integer or floating number or string as input. I don't know how to set that up. So now we know how to get input from our user - let's introduce the extremely important concept of 'if' statements to do certain things depending on the contents of variables. In the following example, the user can input a number, which is stored in the variable x. , search queries, form submissions) against data stored in your Django database. So, the value of a user_input would be whatever user has typed. When the data is entered the program shall print the data and ask the user to verify the data by entering YES Feb 9, 2020 · Then it will ask the user if they want to continue. In this article, we will explore how to use for and while loops for user input in Python. Example: This program checks the data type of user input to confirm that Apr 1, 2021 · We will learn Java Program on if, if-else, and if-else-if ladder statement on java. I need to know how to assign String values in Java language, import java. If your age is not fixed. Sep 22, 2015 · Not sure if I'm overlooking something really simple but I'm trying to make a program that allows a user to enter 1 of 2 letters and then run code based on the input. Aug 21, 2023 · In this Byte, we'll see how to handle user input in Python, specifically how to get a Yes/No answer. Python provides different control structures to handle user input and ensure that it meets our requirements. Seems simple enough but I've ru Jul 23, 2025 · Note: The script does not handle cases where the user enters a non-numeric value. Aug 6, 2016 · The walther. Apr 9, 2024 · To validate user input, use a `while` loop to iterate until the provided input value is valid. Jul 29, 2015 · I'm making a program. Python Print and Input In this tutorial, you will learn about the print () function to display output to the screen and the input () function to take input from the user. The current string value of UserChoice is always interpreted on evaluating each IF condition. ReadLine () statement causes the program to wait for input from the user, who types a number and then presses Enter. The input () function takes input from the user and returns it. This must have a very basic solution! The problem: I want JavaScript to execute an if statement based on user input from a text field. If the user enters a non-numeric value, it may produce unexpected results. That means we are able to ask the user for input. shape('turtle') I wanted the code to start another input function if the answer was Y/y, and just print "Oh, okay. A common use case for these statements is matching user input (e. Here, we’ll give you 10 exercises for writing if-else statements with detailed solutions and explanations. So, fasten your seat belts, and let’s get started! Operators in C++ An operator represents an action. I was wondering if someone could help explain how I could use a For Loop to loop the if statement incase a user enters some unexpected input like A or a number. Discover the right syntax to ensure your program beh Above, the input () function takes the user's input in the next single line, so whatever user writes in a signle line would be assign to to a variable user_input. Nov 25, 2014 · I am writing a program that asks the user to input his name, address and phone number. ---This video is based The if-else statement begins by performing a test whose outcome can be either true or false. Scanner; on an if else Statement algorithm. Sep 1, 2016 · The string entered by the user is never expanded on a parsing/preprocessing stage because of using delayed expansion for environment variable UserChoice. More Control Flow Tools ¶ As well as the while statement just introduced, Python uses a few more that we will encounter in this chapter. 3. If you need another data type (like integer or float), you must convert it manually using typecasting. Conditional statements are the building blocks that allow programs to make choices based on different scenarios. Among these, the if, else if, and else statements are fundamental constructs that every programmer should master. May 18, 2024 · If you’re looking to learn programming with Python, doing practice exercises is a great way to learn. Now that you are familiar with Python's input() function, let's utilize a user's input to decide which lines of code will run. The most common stream objects are - cin : for taking input, cout : for displaying output VBA Input Box and If Statement - Catching user misspellings Asked 9 years, 9 months ago Modified 9 years, 9 months ago Viewed 8k times Learn how to effectively implement conditional logic to manage user input in Python for loop iterations. In computer programming, we use the if statement to run a block of code only when a specific condition is met. e. Try putting scanner. while True: Oct 6, 2015 · I am not doing anything particularly complicated I am simply messing with import random and having the user type roll to roll a six sided die. Sep 8, 2012 · The OP needs to prompt for user input and automatically use a default value if the user does not respond within a timeout period. User Input Python allows for user input. Whether you are building a simple calculator, a text - based game, or a complex data - processing tool, understanding how to handle user input is essential. EDIT: Made my statement more specific as to not confuse OP. Question: Python1 answer = input ("The computer was invented in 1822:")working with the if statementcomplete the python code using the if elif statement block for the statement. This means if statements work hand-in-hand with boolean values: May 18, 2024 · If you’re looking to learn programming with Python, doing practice exercises is a great way to learn. By IF-THEN statements we tell Excel to check if a logical test is true or false, if true THEN do this, and if false, THEN do that. Jul 18, 2019 · I am trying to take the user input and use the if else function to base the outcome on it. Sep 13, 2025 · The program pauses until the user provides some input. if Statements ¶ Perhaps the most well-known statement type is the if statement. The following example demonstrets how to use the optional prompt parameter. The user will enter 'y' or 'n' to indicate if they do or do not want to continue. . Learn how to effectively use `if/elif` statements in Python to handle user input for returning specific outputs based on client names. When Your Input Might Raise an Exception Use try and except to detect when the user enters data that can't be parsed. This number is returned in the form of a string into the myInput variable, which is a string type. Apr 25, 2014 · The simplest way to accomplish this is to put the input method in a while loop. 12,y I wanted the code to perform certain tasks whenever the user input "Yes" or "No", so I needed to know how to implement the user input into an if-else statement. Input validation can also Hello! In this video I go through the intricacies of if statements and in the process teach you how to accept user input from console in java!My Discord - ht Oct 9, 2025 · In C++, data is read and written using streams, which are sequences of bytes. In this comprehensive guide, we’ll dive deep into these About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket © 2025 Google LLC The input from the user can than be used in the program. A better approach is to use set of answer as user may answer in uper letter or lower letter or best take whatever input user want and the convert it to all lower and then compare (you have function for toLower in string library) I think the problem is that it is taking a blank input at the beginning, not the end. Is there a way to only have one prompt at the beginning of the if else statements, instead of 2? I have 4 different equations solving for the same value (kv), except each equat Sep 16, 2025 · Learn simple methods to use switch case in Python with user input. Now we will use cin to get user input. Dec 12, 2021 · Hi folks, this is the second part of my series; “C++: Explain like I’m five”. Input stream: Data flows from a device (like the keyboard) to the computer’s memory. Jun 21, 2025 · The switch statement is a control structure in JavaScript that allows you to execute different blocks of code based on the value of a single expression. . You can optionally provide a prompt message (e. Any other user input should result in Please answer TRUE or FALSE. In Python, input validation is essential for creating robust, error free programs that can handle incorrect or unexpected inputs. Sep 18, 2025 · The input () function in Python is used to take input from the user. Therefore, reading data from user input isn’t a challenge for us. I'm new to JavaScript and have run into a challenge (for me). It enables your program to execute different blocks of code based on certain conditions. I wanted the code to perform certain tasks whenever the user input "Yes" or "No", so I needed to know how to implement the user input into an if-else statement. In this activity, students will: ask ask for string with text Use Boolean logic with Strings Concept: User interaction Allowing users to interact with your code is an important step in making an interesting and enjoyable game. if it is 0 (when even the first value is incorrect, e. Mar 16, 2015 · I am trying to write some code that when the user inputs a shape the turtle draws it, this is what I have so far but it just draws a pentagon all the time import turtle turtle. :)" if it was N/n. In this tutorial, we will learn about ifelse statements in Java with the help of examples. The syntax of an IF-THEN statement looks like below 👀 Learn how to use JavaScript if/else statements with examples and explanations. eup nduhw nuaozz ntn anyib ioaplu sirvl ftxaux dttj scssh hazcjn nxhcvkn zfd iqcc ydlam