最大值

#include<stdio.h>
#include<stdlib.h>
int max(int x,int y)
{
    int ret = (x+y+abs(x-y))/2;
    return ret;
}
int main()
{
    int a,b,c;
    scanf("%d %d %d",&a,&b,&c);
    int m = max(max(a,b),c);
    printf("%d eh o maior",m);
    return 0;

}