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:)نرم افزار جدید ویرایش PDF

#include<iostream.h> #include<conio.h> class Rect { private: float x,y; public: Rect(float a,float b); void Area(); void Prime(); Rect add(Rect c); }; //***************************** Rect::Rect(float a,float b) { x=a; y=b; }...