#include <stdio.h>

int main() {

    int i = 0;

    while (i < 5) {
        printf("%d\n", i);
        i++;    // increment the loop counter
    }

    /* The while loop above works exactly the same as this
       for loop:

    for (i = 0; i < 5; i++) {
        printf("%d\n", i);
    }
    */


    return 0;
}