#include <iostream>
using namespace std;

int sum (int a, int b)
{
	cout << "B from function: " << b <<endl;
	return a + b;
}

int anotherSum()
{
	int a, b, c;
	cout << endl << "Enter a value for a: " ;
	cin >> a;
	cout << endl << "Enter a value for b: " ;
	cin >> b;
	c = a + b;
    cout << "In anotherSum c = " << c << endl;
	return c;
}


int main() {

	int a, b=12;

	anotherSum();
	cout << "In main c = " << anotherSum() << endl;

	cout << "B from main: " << b <<endl;

	sum(2, 4); // function call on its own

	cout << sum(2, 4) << endl; // combined with a statement

	int c = sum(6, 12); // assigned to a variable
	cout << c << endl;

	return 0;
}