Problem Given by Jakir_1.1

#include <stdio.h>
int main (void)
{
    int i,j,k;
    for(i=1,j=0,k=1;i<8;k++)
    {
       printf("%d",k%10);
       j++;
       if(j%2==0)
       {
               printf("\n");
               j=0;
               i++;
       }
    }
    system("pause");
    return 0;
}

The output is given below:

        12
        34
        56
        78
        90
        12
        34