//Demonstrating a call to a function.
#include <iostream.h>
// function Demonstration Function
// prints out a useful message
void DemonstrationFunction()
{
cout << "In Demonstration Function\n";
}
// function main - prints out a message, then
// calls DemonstrationFunction, then prints out
// a second message.
int main()
{
cout << "In main\n" ;
DemonstrationFunction();
cout << "Back in main\n";
return 0;
}