#include<stdio.h>
int main()
{
char a,b,c;
char max;
char min;
printf("请输入三个字符:");
scanf("%c %c %c",&a,&b,&c);
if(a > b)
{
max = a;
min = b;
}
else
{
max = b;
min = a;
}
if(max < c)
{
max = c;
}
if(min > c)
{
min = c;
}
a = max;
printf("%c",a);
}