C++ Tutorial for Beginners 37 - C++ Exception Handling (Try Throw Catch)

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#include <iostream> #include<string> #include <exception> using namespace std; int main() { try{ std::cout<<"Please enter age"<<std::endl; int age=0; std::cin>>age; if(age>100 || age<0) { throw 'a'; } } catch(int e) { std::cout<<"Error No="<<e<<std::endl; } catch(char e) { std::cout<<"Error Char="<<e<<std::endl; } catch(...) { std::cout<<"Unknown Exception"<<std::endl; } }

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C++ Tutorial for Beginners 35 - Introduction to Polymorphism in C++

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#include <iostream> #include<string> using namespace std; class shape { public: void setValues(int a ,int b){ width=a; height=b; } protected: int height ; int width; }; class rectangle : public shape { public: int area(){ return (height * width); } }; class triangle : public shape { public: int area(){ return (height * width/2); } }; int main() { rectangle rec; triangle tri; shape *poly1=&rec; shape *poly2=&tri; poly1->setValues(10,20); poly2->setValues(10,20); std::cout<<rec.area()<<std::endl; std::cout<<tri.area()<<std::endl; }

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C++ Tutorial for Beginners 35 - Introduction to Polymorphism in C++

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#include <iostream> #include<string> using namespace std; class shape { public: void setValues(int a ,int b){ width=a; height=b; } protected: int height ; int width; }; class rectangle : public shape { public: int area(){ return (height * width); } }; class triangle : public shape { public: int area(){ return (height * width/2); } }; int main() { rectangle rec; triangle tri; shape *poly1=&rec; shape *poly2=&tri; poly1->setValues(10,20); poly2->setValues(10,20); std::cout<<rec.area()<<std::endl; std::cout<<tri.area()<<std::endl; }

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