Why are my function calls not working, I'm receiving errors

#include<iostream>
#include<fstream>
#include<iomanip>
using namespace std;

void fillBox(int magicbox[19][19], int n);
void createBox(int magicbox[19][19], int n);

ofstream outfile;
int main()
{
	outfile.open("output.txt");
	int magicnumber; //intermediate variable
	createBox();
	fillBox();
	outfile << "Welcome to  the Magic Square Program!" << endl << endl;
	cout << "Welcome to  the Magic Square Program!" << endl << endl;
	
	cout << "Enter an odd number: ";
	cin >> magicnumber;
	outfile << "Number user entered: " << magicnumber << endl;

	if (magicnumber % 2 == 0){
		do{ //this loop only allows the user to input odd integers
			cout << "Please input odd integers only: " << endl;
			cin >> magicnumber;
		} while (magicnumber %  2 == 0);
	}
	cout << "Magic Box#: " << " > " << magicnumber << " <" << endl << endl;
	outfile << "Magic Box#: " << " > " << magicnumber << " <" << endl << endl;

	system("pause");
	return 0;
}
void createBox(int magicbox[19][19], int n){
	for (int i = 0; i <(n*n); i++){
		for (int x = 0; x < n; x++){
			for (int y = 0; y<n; y++){
				cout << magicbox[x][y];
			}
		}
		cout << endl;
	}
}