1.输出三个数中的最大值

 #include <stdio.h>
#include <stdlib.h>

int main()
{
    int a ,b,c,max1,max ;
    scanf("%d%d%d",&a,&b,&c);
    max1 = (a>b)? a:b;
    max = (c>max1)? c: max1;
    printf("max =%d ",max);
    return 0;
}