改成下面的代码 就能执行了。。vc6编译通过。。
#include
using namespace std;
class X; //这里要前导声明
class Y
{
public:
bool ifelse(X& temp);
};
class X
{
public:
friend bool Y::ifelse(X&);
private:
int a;
int b;
};
bool Y::ifelse(X& temp)
{
return temp.a > temp.b ? true : false;
}
int main()
{
X x;
Y y;
if (y.ifelse(x)) cout<<"it is true"< else cout<<"it is false!"< return 0;
}
