Overload binary operators in C ++

Binary operators in C ++ take two parameters. You use binary operators quite often, such as addition operator (+), subtraction operator (-) and division operator (/).

The following example explains how the plus (+) operator can be overloaded in C ++. Similarly, you can overload the minus operator (-) and the division operator (/).

 #include using namespace  std ; class Box { double  chieudai ; // Chieu dai cua mot box double  chieurong ; // Chieu rong cua mot box double  chieucao ; // Chieu cao cua mot box public : double  tinhTheTich ( void ) { return  chieudai  *  chieurong  *  chieucao ; } void  setChieuDai ( double  dai  ) {  chieudai  =  dai ; } void  setChieuRong ( double  rong  ) {  chieurong  =  rong ; } void  setChieuCao ( double  cao  ) {  chieucao  =  cao ; } // Nap chong toan tu + de cong hai doi tuong Box. Box operator +( const Box &  b ) { Box  box ;  box . chieudai  = this -> chieudai  +  b . chieudai ;  box . chieurong  = this -> chieurong  +  b . chieurong ;  box . chieucao  = this -> chieucao  +  b . chieucao ; return  box ; } }; // ham main cua chuong trinh int  main ( ) { Box Box1 ; // Khai bao Box1 la cua kieu Box Box Box2 ; // Khai bao Box2 la cua kieu Box Box Box3 ; // Khai bao Box3 la cua kieu Box double  thetich  = 0.0 ; // Luu giu the tich cua mot box tai day // thong tin chi tiet cua box 1  Box1 . setChieuDai ( 3.0 ); Box1 . setChieuRong ( 4.0 ); Box1 . setChieuCao ( 5.0 ); // thong tin chi tiet cua box 2 Box2 . setChieuDai ( 6.0 ); Box2 . setChieuRong ( 7.0 ); Box2 . setChieuCao ( 8.0 ); // the tich cua box 1  thetich  = Box1 . tinhTheTich ();  cout  << "The tich cua Box1 : " <<  thetich  << endl ; // the tich cua box 2  thetich  = Box2 . tinhTheTich ();  cout  << "The tich cua Box2 : " <<  thetich  << endl ; // Cong hai doi tuong: Box3 = Box1 + Box2 ; // the tich cua box 3  thetich  = Box3 . tinhTheTich ();  cout  << "The tich cua Box3 : " <<  thetich  << endl ; return 0 ; } 

Compiling and running the above C ++ program will produce the following results:

According to Tutorialspoint

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