C1829: + - incompatible Types

[ERROR]

For + and - only compatible types on both sides can be used. In C++ own implementation can be used with overloading.

  struct A {

  

    int i;

  

  };

  

  void main() {

  

    int i;

  

    A a;

  

    i=i+a;   // error

  

  }

  

Use compatible types on the left and on the right side of the +/- operator. Or use the operator-overloading and define an own + or - operator!