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 alphabet = '0'; while(scanf("%c",&alphabet) != EOF) { if(alphabet>='A' && alphabet<='Z') alphabet += 32; else if(alphabet>='a' && alphabet<='z') alphabet -= 32; printf("%c",alphabet); } return 0; }