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While Loop

A while loop in C is a control flow statement that allows code to be executed repeatedly based on a given boolean (true/false) condition. The loop continues to execute as long as the condition remains true.

Syntax

while (condition) {
    // Loop Body
}

Parts of a `while` Loop

Condition
- Checked before each iteration.
- If true, execute the body. If false, terminate the loop
Loop Body
- The block of code that is executed while condition is true.

Example: Basic Loop

#include <stdio.h>

int main() {
    int i = 0;
    while (i < 5) {
        printf("%d\n", i);
        i++;
    }
    return 0;
}
// Prints:
// 0
// 1
// 2
// 3
// 4

Key Points

The condition is evaluated before the execution of the loop body.
If the condition is false initially, the loop body will never even start.
If the condition never becomes false, you will get an infinite loop.

Assignment