power

#include <stdio.h>
int main(void) {
  int x = 4, y = 3;
  for (int i = 1; i <= y; ++i) {
    for (int j = 1, s = 1; j <= x; ++j, s = 1) {
      for (int k = i; k; --k, s *= j) {
        ;
      }
      printf("%s%d", (j == 1 ? "" : " "), s);
    }
    puts("");
  }
}