83 lines
1.9 KiB
C++
83 lines
1.9 KiB
C++
#include <iostream>
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using std::cout;
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using std::endl;
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class ObjectClass {
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private:
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int privateVar;
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protected:
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int protectedVar;
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public:
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ObjectClass() :
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privateVar(10), protectedVar(15) {}
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ObjectClass(int a, int b) :
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privateVar(a), protectedVar(b) {}
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void print() {
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cout << "in objectClass. ";
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cout << "priv, prot = " << privateVar << ' '<< protectedVar << endl;
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}
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void setPrivate(int a) { privateVar = a;}
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void setProtected(int a) { protectedVar = a;}
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};
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class ComposedClass {
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private:
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ObjectClass object;
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//int privateVar;
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public:
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void print() {
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//cout << "in composedClass. ";
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//cout << "privateVar " << privateVar << endl;
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//cout << "protectedVar " << protectedVar << endl;
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//cout << "object privateVar " << object.privateVar << endl;
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//cout << "object protectedVar " << object.protectedVar << endl;
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object.print();
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}
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protected:
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//int protectedVar;
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};
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class DerivedClass : public ObjectClass {
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private:
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/*
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int privateVar;
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int protectedVar;
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*/
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public:
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// DerivedClass() {}
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//DerivedClass() : ObjectClass(1,2) {}
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/*{
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privateVar = 20;
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protectedVar = 25;
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}*/
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void print() {
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//cout << "in derivedClass. ";
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//cout << "privateVar " << privateVar << endl;
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//cout << "protectedVar " << protectedVar << endl;
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//cout << "object privateVar " << ObjectClass::privateVar << endl;
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//cout << "object protectedVar " << ObjectClass::protectedVar << endl;
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ObjectClass::print();
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}
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};
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int main() {
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ObjectClass baseObject_default;
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ObjectClass baseObject_2_3(2,3);
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ComposedClass hasAobject_default;
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DerivedClass isAobject_default;
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// DerivedClass isAobject_4_5(4,5);
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cout << "Base default: ";
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baseObject_default.print();
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cout << "Base 2,3 : ";
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baseObject_2_3.print();
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cout << "Composed default : ";
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hasAobject_default.print();
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cout << "Derived default : ";
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isAobject_default.print();
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cout << "Derived 4,5 : ";
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// isAobject_4_5.print();
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return 1;
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}
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