题解 | #大小写转换#
大小写转换
https://www.nowcoder.com/practice/4e089ee8966a4ed4b306f64e68d45264
#include <stdio.h> int main() { char i; while(scanf("%c",&i)!=EOF) { getchar(); if(i>='A' && i<='Z') { i=i+32; } else { i = i-32; } printf("%c\n",i); } return 0; }