C - While Loop

The while loop repeats a block while a condition remains true.

Learning Objectives

• Write while loops with correct initialization and updates.

Prerequisites

• C - Looping Statements

Example

#include <stdio.h>

int main(void) {
    int i = 3;
    while (i > 0) {
        printf("%d\n", i);
        i--;
    }
}

Common Pitfalls

• Forgetting to update the loop variable, causing infinite loops.

Checks for Understanding

1. When does the loop body run 0 times?