可能重复:
Function with same name but different signature in derived class简单的C++继承示例,有什么问题?
我试图编译此,我无法弄清楚什么是错的代码。我使用Xcode g ++ 4.2.1版的MacOSX Snow Leopard。有人能告诉我这是什么问题吗?我认为这应该编译。这不是我的作业,我是一名开发人员...至少我认为我一直是被这个难住了。我收到以下错误信息:
error: no matching function for call to ‘Child::func(std::string&)’
note: candidates are: virtual void Child::func()
下面是代码:
#include <string>
using namespace std;
class Parent
{
public:
Parent(){}
virtual ~Parent(){}
void set(string s){this->str = s;}
virtual void func(){cout << "Parent::func(" << this->str << ")" << endl;}
virtual void func(string& s){this->str = s; this->func();}
protected:
string str;
};
class Child : public Parent
{
public:
Child():Parent(){}
virtual ~Child(){}
virtual void func(){cout << "Child::func(" << this->str << ")" << endl;}
};
class GrandChild : public Child
{
public:
GrandChild():Child(){}
virtual ~GrandChild(){}
virtual void func(){cout << "GrandChild::func(" << this->str << ")" << endl;}
};
int main(int argc, char* argv[])
{
string a = "a";
string b = "b";
Child o;
o.set(a);
o.func();
o.func(b);
return 0;
}
短短一小时回别人有这个问题:HTTP://计算器。 com/questions/6034869/c-inheritence – Nawaz 2011-05-17 19:14:25