两数比大小

给出两个数x和y,求出两数的大者

#include
using namespace std;
int max(int x,int y)
{
    int z;
    if(x>y) z=x;
    else z=y;
    return z;
}
int main()
{
    int a,b,c;
    cout<<"Please input two numbers:\n";
    cin>>a>>b;
    c=max(a,b);
    cout<<"maximum number is "<