1042: [编程入门]电报加密

解题思路:灵活运用ctype函数

注意事项:注意大小写

参考代码:

#define _CRT_SECURE_NO_WARNINGS

#pragma warning(disable:6031)

#include <stdio.h>

#include<string.h>

#include <ctype.h>

int main()

{

char c;

int flag = 1;

while ((c = getchar())!= EOF&&c!='\n')

{

if (isalpha(c))

{

if (islower(c))

{

if (c == 'z')

{

putchar('a');

flag = 0;

}

else

{

putchar(c + 1);

flag = 0;

}

}

else

{

if (c == 'Z')

{

putchar('A');

flag = 0;

}

else

{

putchar(c + 1);

flag = 0;

}

}

}

else

putchar(c);

}

return 0;

}