Problem:
Score : 100 points

Problem Statement

Given is a lowercase English letter C that is not z. Print the letter that follows C in alphabetical order.

Constraints

C is a lowercase English letter that is not z.

Input

Input is given from Standard Input in the following format:

C

Output

Print the letter that follows C in alphabetical order.

Sample Input 1

a

Sample Output 1

b

a is followed by b.

Sample Input 2

y

Sample Output 2

z

y is followed by z.

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

#include <stdio.h>
#include <stdlib.h>

int main() {
	
	char ch;
 	printf("请输入一个字符：");
 	scanf("%c",&ch);
 	
	if('a'<=ch&&ch<'z'){
		printf("%c",ch+1);
	}else if('A'<=ch&&ch<'Z'){
		printf("%c",ch+1);
	}else if('z'==ch||'Z'==ch){
		printf("不能输入z或Z");
	}else{
		printf("输入字符错误");
	}
		return 0; 
}