Problem:
Score : 100 points

Problem Statement

An uppercase or lowercase English letter \alpha will be given as input.
If \alpha is uppercase, print A; if it is lowercase, print a.

Constraints

\alpha is an uppercase (A - Z) or lowercase (a - z) English letter.

Input

Input is given from Standard Input in the following format:

α

Output

If \alpha is uppercase, print A; if it is lowercase, print a.

Sample Input 1

B

Sample Output 1

A

B is uppercase, so we should print A.

Sample Input 2

a

Sample Output 2

a

a is lowercase, so we should print a.

Solution in C (GCC 9.2.1) (judge verdict: Wrong Answer)

#include<stdio.h>

int main(void){

  int i;

  /* 文字 */
  char moji;

  /* 文字を入力 */
  printf("文字を入力 = ");
  scanf("%c", &moji);

  /* アルファベットの小文字か大文字かを判定 */
  if((moji>= 'a') && (moji<='z')){
    printf("アルファベットの小文字！\n");
  }
  else if((moji>= 'A') && (moji<='Z')){
    printf("アルファベットの大文字！\n");
  }
  else {
    printf("その他の文字！\n");
  }

  return 0;
}