例7.2

{ int z;
z=x>y? x:y;
return(z);
}
#include<stdio.h>
int main()
{ int max(int x,int y);
int a,b,c;
printf("please enter two integer numbers:");
scanf("%d,%d",&a,&b);
c=max(a,b);
printf("max is%d\n",c);
return 0;
}