1 2 3 4 5
2 4 6 8 10
3 6 9 12 15
4 8 12 16 20
1 int main() 2 { 3 int i, j; 4 for (i = 1; i <= 4; i++) 5 { 6 for (j = 1; j<=5; j++) 7 printf("%2d ", i*j); 8 9 printf(" "); 10 } 11 }