题解 | #字母大小写转换#
字母大小写转换
http://www.nowcoder.com/practice/850ebd30a2a34cfc87199da3fc15786a
#include <stdio.h>
int main(){
char ch;
while(scanf("%c",&ch)!=EOF){
getchar();
if(isupper(ch)){
printf("%c\n",ch+32);
}
if(islower(ch)){
printf("%c\n",ch-32);
}
}
return 0;
}
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