Thread: Simple program won't work on a friend's comp

I sent one of my friends a very simple program, but they said it didn't work, and they said they got an error that said their computer couldn't recognize the file extension or something.

Here's the following code, made in Dev-C++. (btw, this is the exact same code as one of the sample programs in a tutorial)

Code:

#include <iostream>	

using namespace std;
		
int main()                            // Most important part of the program!
{
  int age;                            // Need a variable...
  
  cout<<"Please input your age: ";    // Asks for age
  cin>> age;                          // The input is put in age
  cin.ignore();                       // Throw away enter
  if ( age < 100 ) {                  // If the age is less than 100
     cout<<"You are pretty young!\n"; // Just to show you it works...
  }
  else if ( age == 100 ) {            // I use else just to show an example 
     cout<<"You are old\n";           // Just to show you it works...
  }
  else {
    cout<<"You are really old\n";     // Executed if no other statement is
  }
  cin.get();
}