106 lines
1.4 KiB
C++
106 lines
1.4 KiB
C++
#include <iostream>
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#include <string>
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using namespace std;
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class A
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{
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public:
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void a() {}
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};
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class B : public A
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{
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public:
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B(string s="")
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{
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id = ++idStat;
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this->s = s;
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info("B()");
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}
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virtual ~B()
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{
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info("~B()");
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}
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void a()
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{
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s += "1";
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info("B::a()");
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}
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virtual void b()
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{
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s += "2";
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info("B::b()");
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}
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void b() const
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{
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info("B::b() const");
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}
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static int liefereIdStat()
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{
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return idStat;
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}
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protected:
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string s;
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void info(const string& text) const
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{
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cout << id << ": " << text << " " << s << endl;
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}
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private:
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int id;
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static int idStat;
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};
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int B::idStat = 0;
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class C : public B
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{
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public:
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C() : B("C")
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{
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info("C()");
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}
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virtual ~C()
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{
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info("~C()");
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}
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void a()
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{
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s += "3";
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info("C::a()");
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}
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void b()
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{
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s += "4";
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info("C::b()");
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}
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};
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int main()
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{
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A a;
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a.a();
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cout << "vvv " << B::liefereIdStat() << endl;
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B b;
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b.b();
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cout << "www " << b.liefereIdStat() << endl;
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C* c[2];
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c[0] = new C;
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c[1] = new C;
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c[0]->a();
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c[1]->b();
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delete c[0];
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delete c[1];
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const C c2;
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cout << "xxx " << C::liefereIdStat() << endl;
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A* ac = new C;
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ac->a();
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delete ac;
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cout << "yyy " << B::liefereIdStat() << endl;
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B* bc = new C;
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bc->a();
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bc->b();
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delete bc;
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cout << "zzz " << B::liefereIdStat() << endl;
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}
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