The standard assignment operator in C++ is the equals sign =. In addition to this operator, C++ also includes the following composite assignment operators: +=, -=, *=, /=, and %=.
We make an example to show the functionality
//: Date :July 2011 //: Author :"Guitar-Player." aol.com.mx> //: Version : //: Description :Applying composite arithmetic assignment operators. //: Options :Nothing. ///////////////////////////////SOURCE CODE//////////////////////////////// //Headers. #include #include using namespace std; //Body program. int main() { int n=22; cout << "n = " << n << endl; n += 9; // adds 9 to n cout << "After n += 9, n = " << n << endl; n -= 5; // subtracts 5 from n cout << "After n -= 5, n = " << n << endl; n *= 2; // multiplies n by 2 cout << "After n *= 2, n = " << n << endl; n /= 3; // divides n by 3 cout << "After n /= 3, n = " << n << endl; n %= 7; // reduces n to the remainder from dividing by 7 cout << "After n %= 7, n = " << n << endl; return 0; //is optional for the main(). }