Mendelbrot Ascii plot

[Korcha]

So for CompSci class we have to create an Ascii plot of the mendelbrot set.
I've gotten this far but don't know how to run the actual program. Any help would be great.
Thanks!

#include <iostream>
#include <complex>
using namespace std;

int mandelbrotEscapeNumber( complex<double> c);
char mandelbrotEscapeChar( int i );

int main(void)
{

	
	system("pause");
	return(0);
}


//mandelbrot function 
int mandelbrotEscapeNumber( complex<double> c){

	complex<double> z;
	int i = 0;

	do{

		z = z*z + c;
		i++;

		if( i >= 255)
			break;

	}while( abs(z) <= 2.0 );

	return(i);

}

char mandelbrotEscapeChar( int i ){

	if(i<5)
		return('@');
	if(i<10)
		return('.');
	if(i<50)
		return(' ');
	if(i<100)
		return('.');
	if(i<150)
		return(' ');
	
	return('+');

}