例7.2

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