#include <stdio.h>

int main() {
    int i;
    for (i = -12; i <= 12; i++) {
        printf("%d\n", i);
    }
    int k = 0; 
    printf("\nΤώρα με while loop:\n");
    k = -12;
    while (k <= 12) {
        printf("%d\n", k);
        k++;
    }
    printf("\nΤώρα με do...while loop:\n");
    int j = -12;
    do {
        printf("%d\n", j);
        j++;
    } while (j <= 12);

    return 0;
}
