#include <stdio.h>
#include <stdlib.h>
 
#define TEXTURE_SIZE 12

int main()
{
 
    int k;
    int i;
    for (i = 0, k = 0; i < TEXTURE_SIZE * TEXTURE_SIZE; i++, k += 2)
    {
        printf("i= %d, k=%d\n", i, k);
    }
 
    return 0;
}