Half Pyramid of Numbers

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

#include <stdio.h>

int halfPiramidNumbers() {
  int i, j, rows;
  printf("Enter the number of rows: ");
  scanf("%d", &rows);
  for (i = 1; i <= rows; ++i) {
    for (j = 1; j <= i; ++j) {
      printf("%d ", j);
    }
    printf("\n");
  }
  return 0;
}