single
Challenge: If Statement
Swipe to show menu
You have already explored the importance of control flow in programming. Now, it is time to focus on the basic building block of decision-making in C: the if statement. The if statement allows you to execute a block of code only when a specific condition is true. Its syntax is straightforward:
main.c
123if (condition) { // Statements to execute if condition is true }
Here, the condition is an expression that evaluates to either true (non-zero) or false (zero). If the condition is true, the code inside the braces runs; otherwise, it is skipped.
main.c
123456789101112#include <stdio.h> int main() { int age = 20; // User is an adult if (age >= 18) printf("Access granted.\n"); return 0; }
This simple structure enables your programs to make decisions and respond differently to various inputs or situations.
Swipe to start coding
Write a function that uses an if statement to check if a given integer is positive. If the number is greater than zero, return a value indicating that it is positive.
- Use an if statement to test if
numberis greater than zero. - If true, return a value (such as 1) to indicate the number is positive.
- Otherwise, return a value (such as 0) to indicate the number is not positive.
Solution
Switch to desktop for real-world practiceContinue from where you are using one of the options belowThanks for your feedback!
single
Ask AI
Ask AI
Ask anything or try one of the suggested questions to begin our chat
