转大写字母-(ASCII表)时间:2023-03-09 19:38:05 #include<stdio.h> /* 转大写,ASCII表.大写与小写相差32 */ char upper(char c) { if(c>='a'&&c<='z') { return c-('a'-'A'); }else { return c; } } int main() { char cc=upper('a'); printf("%c\n",cc); return ; }