/* This cose is for calculating the Area and perimeter of a Rectangle Name : Rectangles Language : C++ Coder : Luyanda */ /* Plan Of Achievement * Have a Template class * Have Three Member Variables * Have A Function For Calculating Area * Have a Function For Calculating Perimeter * Member Initialisation Must Be Done By The Constructor * The Area and Perimeter Must Calculated and Printed At Time Of Object Object Creation * The User Must Set The Input For The Members * Use Qualified Namespacing */ //Start Coding Now #include template class Rectangle{ public: T length,breadth; T calcArea(); T calcPeri(); Rectangle(T a,T b); bool isNegative(T a); void validate(T &a); }; // Now the implementations template T Rectangle::calcArea(){ return length * breadth; } template T Rectangle::calcPeri(){ return 2 * ( length + breadth); } //Don't forget the constructor template Rectangle::Rectangle(T a,T b): length(a),breadth(b) { try{ if(isNegative(a) || isNegative(b)){ std::cout<<"Lenght can not be Negative.\nThe Answer will be wrong\n"; } }catch(...){ } } //Ohhh The distance can't be Negative template bool Rectangle::isNegative(T a){ if(a > 0 && a != 0){ return false; } else return true; } //Fixing the Negative Distances issue template void Rectangle::validate(T &a){ if(isNegative(a)){ a *= -1; } } //Now Start the main int main(){ double a,b; //Get the input() std::cin>>a; std::cin>>b; std::cout<<"Hi \n\nThis Codde Is About The Area And Perimeter Of A Rectangle.\nYou Requested For The Area and Perimeter Of A Rectangle With The Lenght Of "< rect(a,b); if(rect.isNegative(a)== false && rect.isNegative(b) == false ){ std::cout<<"The Area of this rectangle is "<