从这个问题开始:
并考虑这个简化的代码:
#include <string>
#include <iostream>
class Abstract
{
public:
virtual void method(int a)
{
std::cout << __PRETTY_FUNCTION__ << "a: " << a << std::endl;
}
};
class Concrete : public Abstract
{
public:
void method(char c, std::string s)
{
std::cout << __PRETTY_FUNCTION__ << "c: " << c << "; s: " << s << std::endl;
}
};
int main()
{
Concrete c;
c.method(42); // error: no matching function for call to 'Concrete::method(int)'
c.method('a', std::string("S1_1"));
Abstract *ptr = &c; …Run Code Online (Sandbox Code Playgroud)