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2.7.cpp
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65 lines (56 loc) · 1.2 KB
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//
// 2.7.cpp
// c++1x tutorial
//
// created by changkun at changkun.de
//
// 面向对象增强
#include <iostream>
#include <string>
class Base {
public:
std::string str;
int value;
Base() = delete;
Base(std::string s) {
str = s;
}
// 委托构造
Base(std::string s, int v) : Base(s) {
value = v;
}
// 终止重载
virtual void foo() final {
return;
}
virtual void foo(int v) {
value = v;
}
};
class Subclass final : public Base {
public:
double floating;
Subclass() = delete;
// 继承构造
Subclass(double f, int v, std::string s) : Base(s, v) {
floating = f;
}
// 显式重载
virtual void foo(int v) override {
std::cout << v << std::endl;
value = v;
}
}; // 合法 final
// class Subclass2 : Subclass {
// }; // 非法, Subclass 已 final
// class Subclass3 : Base {
// void foo(); // 非法, foo 已 final
// }
int main() {
// Subclass oops; // 非法, 默认构造已删除
Subclass s(1.2, 3, "abc");
s.foo(1);
std::cout << s.floating << std::endl;
std::cout << s.value << std::endl;
std::cout << s.str << std::endl;
}