What is an example of iteration in C?

Iteration in C can be achieved using loop structures such as for, while, and do-while. Here is an example using a for loop:

#include <stdio.h>

int main() {
    int i;
    for(i = 0; i < 5; i++) {
        printf("%d\n", i);
    }
    return 0;
}

In this example, the for loop will iterate 5 times. The variable i is initialized to 0, and the condition i < 5 is checked before each iteration. If the condition is true, the loop body is executed and i is incremented by 1 (i++). The loop continues until i is no longer less than 5.