What is the output of the following C++ program? #include #include using namespace std; class baseClass { public: void print() const; baseClass(string s = " ", int a = 0); //Postcondition: str = s; x = a; protected: int x; private: string str; }; class derivedClass: public baseClass { public: void print() const; derivedClass(string s = "", int a = 0, int b = 0); //Postcondition: str = s; x = a; y = b; private: int y; }; int main() { baseClass baseObject("This is the base class", 2); derivedClass derivedObject("DDDDDD", 3, 7); baseObject.print(); derivedObject.print(); system("pause"); return 0; } void baseClass::print() const { cout << x << " " << str << endl; } baseClass::baseClass(string s, int a) { str = s; x = a; } void derivedClass::print() const { cout << "Derived class: " << y << endl; baseClass::print(); } derivedClass::derivedClass(string s, int a, int b) : baseClass("Hello Base", a + b) { y = b; }
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
What is the output of the following C++ program?
#include <iostream> #include <string>
using namespace std;
class baseClass { public: void print() const; baseClass(string s = " ", int a = 0); //Postcondition: str = s; x = a;
protected: int x;
private: string str; };
class derivedClass: public baseClass { public: void print() const; derivedClass(string s = "", int a = 0, int b = 0); //Postcondition: str = s; x = a; y = b; private: int y; };
int main() { baseClass baseObject("This is the base class", 2); derivedClass derivedObject("DDDDDD", 3, 7);
baseObject.print(); derivedObject.print();
system("pause");
return 0; } void baseClass::print() const { cout << x << " " << str << endl; }
baseClass::baseClass(string s, int a) { str = s; x = a; }
void derivedClass::print() const { cout << "Derived class: " << y << endl;
baseClass::print(); }
derivedClass::derivedClass(string s, int a, int b) : baseClass("Hello Base", a + b) { y = b; }
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