求解啊 帮帮我急

# include <stdio.h>
int max(int x,int y,int z)
{
int temp = x>y?x:y;
return temp>z?temp:z;
}
void main( )
{
int a,b,c,m;
scanf(%d,%d,%d",&a,&b,&c)
m=max(a,b,c);
printf("max=%d\n",m);
}