为什么另外一个不可以

#include<stdio.h>
int main()
{
char ch,sh,gh,team;
while(scanf("%c%c%c",&ch,&sh,&gh)!=EOF)
{
getchar();
if(ch>sh)
team=ch,ch=sh,sh=team;
if(sh>gh)
team=sh,sh=gh,gh=team;
if(ch>gh)
team=ch,ch=gh,gh=team;
printf("%c %c %c\n",sh,ch,gh);
}
return 0;
}

题目是啥，输入是啥？