题解 | #字母大小写转换#
字母大小写转换
https://www.nowcoder.com/practice/850ebd30a2a34cfc87199da3fc15786a
#include <stdio.h>
int main()
{
char ch = 0;
while (~scanf("%c", &ch))
{
getchar();
if (ch >= 'A' && ch <= 'Z') ch += 32;
else if (ch >= 'a' && ch <= 'z') ch -= 32;
printf("%c\n", ch);
}
return 0;
}
