C++ Additive Operators: + and -

The additive operators are:

• Addition (+)

• Subtraction (–)

These binary operators have left-to-right associativity.

The additive operators take operands of arithmetic or pointer types. The result of the addition (+) operator is the sum of the operands. The result of the subtraction (–) operator is the difference between the operands. If one or both of the operands are pointers, they must be pointers to objects, not to functions. If both operands are pointers, the results are not meaningful unless both are pointers to objects in the same array.

// compile with: /EHsc
#include <iostream>
#define SIZE 5
using namespace std;
int main() {
   int i = 5, j = 10;
   int n[SIZE] = { 0, 1, 2, 3, 4 };
   cout  << "5 + 10 = " << i + j << endl
         << "5 - 10 = " << i - j << endl;

   // use pointer arithmetic on array

   cout << "n[3] = " << *( n + 3 ) << endl;
}