توابع در ++C

#include <iostream>
#include <string>
using namespace std;
void printMessage(string, int);  

int main ()
{
   string name;
   int age; 
   cout << "Enter name: ";
   cin >> name;
   cout << "Enter age: ";
   cin >> age;
   printMessage(name, age); 
   return 0;
}
void printMessage (string theName, int theAge)
{
   cout << "Your name is " << theName 
      << " and your age is " << theAge << endl;
}