problem 31(i)

#include <stdio.h>

int main ()
{
  int n;
  printf("Enter a value of n: ");
  scanf("%d", &n);

  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n - i; j++) {
      printf("%c", 'A' + i);
    }
    printf("\n");
  }

  return 0;
}

Enter a value for n: