Writing to output file(.txt) with several functions

[Mezz456]

I'm currently in an introductory class and I have to write a program to convert dec to hex, binary, and octal using arrays and then write to a text file. I can write to one normally but this is the first time I have with several functions and keep getting compiler errors. Below is the conversion of octal and it will take inputs but I receive errors on outputting and it says outFile is not declared. Sorry for the long length of the copied code and thanks for any help you can provide.

 void printReverse (int print [], int ii, ofstream& out){
	for (int z = ii; z >= 0; z--)
		out << print[z];
}

void convertOctal (unsigned int num, ofstream& out){
	int oct[8] ;
	int roct[8];
	oct[0] = num/8;
	roct[0] = num%8;
	
	if (num >  16777215 || num < 0)
		out << "error" << endl;
	else
		for (int i = 1; i < 8; i++){
			oct[i] = (oct[(i-1)]/8);
			roct[i] = (oct[(i-1)]%8);
		}
		for (int i = 0; i < 8; i++){
			if (oct[i] == 0){
				printReverse(roct, i, outFile);
				out << endl;
				break;
			}
		}
}


void convert(string inputFile, string outputFile){
	ifstream inFile;
	inFile.open(inputFile);
	ofstream outFile;
	outFile.open(outputFile);
	int count = 0;
	unsigned int number;
	inFile.getline(number);
	while(!inFile.fail()){
		convertBinary(number,outFile);
		convertOctal(number, outFile);
		convertHex(number, outFile);
		inFile.getline(number);
		count++;
	}
	inFile.close();
	outFile.close();
}
				
int main(){
	string inputFile = "input.txt";
	string outputFile = "output.txt";
        convert(inputFile, outputFile);
	return 0;
}

[SamuelAdams]

Either move line 49 & 50 to your function or make them global.