Need help with C++

[GT98]

Well I'm totally not getting this, anyone care to help. I'm trying to show an array passing to a function and I also need to include conts with array parameter. I'm missing the function prototype also.

#include <iostream.h>

   void changeElement(int a[], int n) {
      for (int i = 0; i < n; i++) {
         a[i] *= 2;
      }
   }

   int main() {
      int list[] = { 0, 1, 2, 3 };
      changeElements(list, 4);
      for (int i = 0; i < 4, i++) {
         cout << list[i] << endl;
      }
      return 0;
   }

   0
   2
   4
   6

Also if you feel like giving me hand with C++ programming, drop me a PM, since I'm totally lost at the moment with my classes.

[Wombat]

I made 3 changes to your code:

1) You called it changeElement and changeElements depending on the line. Maybe just a typo here on the forums?
2a) You don't want/need the .h when you include iostream. Having .h is the C way, and you want the C++ way.
2b) After you drop the .h - You must include the std namespace. Without that, cout and endl are not defined. The alternative is to say std::cout and std::endl specifically.

3) I gave you a function prototype, as an example.

#include <iostream>

using namespace std;

void changeElements(int a[], int n);

int main() {
	int list[] = { 0, 1, 2, 3 };
	changeElements(list, 4);
	for (int i = 0; i < 4; i++) {
		cout << list[i] << endl;
	}
	return 0;
}

void changeElements(int a[], int n) {
	   for (int i = 0; i < n; i++){
		   a[i] *= 2;
	   }
}

P.S. Remember to use g++, and not gcc for this.