大写字母转化为小写字母
#include<stdio.h>
int main(){
char c1,c2;
c1=getchar();
c2=c1+32;
putchar(c2);
putchar('\n');
return 0;
#include<stdio.h>
int main(){
char c1,c2;
scanf("%c",&c1);
c2=c1+32;
printf("%c\n",c2);
return 0;
}