func.cpp

teach yourself C++ in 21 days 第五版

#include <iostream>
int Add (int first, int second)
{
    std::cout << "In Add(), received " << first << " and " << second << "\n";
    return (first + second);
}
  
int main()
{
    using std::cout;
    using std::cin;
  
  
    cout << "I'm in main()!\n";
    int a, b, c;
    cout << "Enter two numbers: ";
    cin >> a;
    cin >> b;
    cout << "\nCalling Add()\n";
    c=Add(a,b);
    cout << "\nBack in main().\n";
    cout << "c was set to " << c;
    cout << "\nExiting...\n\n";
    return 0;
}