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