题解 | #大小写转换#
大小写转换
https://www.nowcoder.com/practice/4e089ee8966a4ed4b306f64e68d45264
#include <ctype.h>
#include <stdio.h>
int main() {
char c;
while(scanf("%c",&c) != EOF)
{
c = tolower(c);
printf("%c",c);
}
return 0;
}
