#include<iostream>
#include<string>
using namespace std;
int main()
{
 class a{
 public:
 bool b(const int c,const int d)
 {
   return c>b?c:d;
 }
 }
 bool g;
 int e=10,f=11;
 cout<<g.b(e,f)<<endl;
 return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
    class a{
    public:
    int b(const int c,const int d)
    {
      return    c>b?c:d;
    }
    };
    int g;
    int e=10,f=11;
    cout<<g.b(e,f)<<endl;
    return 0;
}
改成这样了?错误还有,哪里?谢谢