Assignment operators

Question

The following expression is valid in C++:

A = B = C = 10;

The variables A, B, and C will now contain the value 10.

I'm trying to figure out how to make it so A, B, and C can contain the value of 10 when declared, not assign them later;

#include <iostream>
using namespace std;

int main()
{
   int A, B, C, = 10;
   int result;
   result = A = B = C = 10;
   cout << A << B << C << 10;

   result 0;
}

Answer 1

In C++ every variable definition has to have its own initializer. If you want to chain that then you need to use something like

int A = 10, B = A, C = B;

This will do what you want but it is required to you manually specify the initializer.

Answer 2

You cannot do what you want directly. However, in my opinion wanting to initialize them with the same value is reason enough to define a class:

struct ABC {
    int A,B,C;
    ABC(int x) : A(x),B(x),C(x) {}
};

If there is a relation between A,B and C, make it explicit. Now you can use a single value to initialize them:

ABC abc{10};