#include using namespace std; /*class Rectangle { int width, height; public: void set_values (int,int); int area() {return width*height;} }; void Rectangle::set_values (int x, int y) { width = x; height = y; }*/ class FileIO { public: std::string openFile( ); }; std::string openFile(std::string fileName) { std::ifstream file(fileName); }