Opening a file

[jesuisloup]

I'm trying to write to a file and open it, but I only get my default statement.

 void getFile(ifstream& writeFile) 
{
	writeFile.open("\n ch9ex6.txt");
	if (!writeFile) 
	{
		cout << "There was an error opening the input file" << endl;
		exit(1);
	}

What am I missing..

[48T7M4Gy]

writeFile.open("ch9ex6.txt");
if(!writeFile.is_open())

[jesuisloup]

I'm not sure if the file is being created.. maybe that's the issue.

here's the whole code:

#include <iostream>
#include <string>
#include <fstream>

using namespace std;

const int NUM_OF_QUEST = 20;
const int NUM_OF_STUDENTS = 10;

void getFile(ifstream& writeFile);
void markAnswr(char studentAnswers[][NUM_OF_QUEST], string studentIDs[], char correctAnswers[]);
char grade(int score);

//main function to get and read the answers
int main()
{

	string studentIDs[NUM_OF_STUDENTS];
	char correctAnswers[NUM_OF_QUEST];
	char studentAnswers[NUM_OF_STUDENTS][NUM_OF_QUEST];
	ifstream writeFile;

	getFile(writeFile);

	// Read the set of correct answers
	for (int i = 0; i <= NUM_OF_QUEST; i++) 
	{
		correctAnswers[i] = writeFile.get();
		cout << correctAnswers[i];
	}

	// Read the input of each student ID and answers
	for (int i = 0; i <= NUM_OF_STUDENTS; i++)
	{
		writeFile >> studentIDs[i]; 
		writeFile.get(); 
		for (int a = 0; a <= NUM_OF_QUEST; a++)
			studentAnswers[i][a] = writeFile.get(); 
	}

	markAnswr(studentAnswers, studentIDs, correctAnswers);


	return 0;
}
//function to read each string and mark the answers correct/incorrect
void markAnswr(char studentAnswers[][NUM_OF_QUEST], string studentIDs[], char correctAnswers[]) 
{

	for (int x = 0; x < NUM_OF_QUEST; x++)
	{
		cout << correctAnswers[x]; 
	}
	cout << endl;

	for (int i = 0; i < NUM_OF_STUDENTS; i++) 
	{
		int score = 0;
		for (int a = 0; a < NUM_OF_QUEST; a++) 
		{
			if (studentAnswers[i][a] == correctAnswers[a]) 
			{
				score += 2; 
			}
			else if (studentAnswers[i][a] != correctAnswers[a] && studentAnswers[i][a] != ' ') 
			{
				score -= 1; 
			}

			cout << "Correct Answer: " << static_cast<char>(correctAnswers[a]) << " Student Answer: " << studentAnswers[i][a] << endl;
		}
		if (score < 0)
			score = 0;

		cout << studentIDs[i] << " score = " << score << endl;
	}
}

char grade(int score) 
{
	if (score == 0)
		return 'F';


}

void getFile(ifstream& writeFile) 
{
	writeFile.open("C:\\Users\\Kristina\\Desktop\\CIS242\\Week8\\ch9ex6.txt");
	if (!writeFile.is_open())
	if (!writeFile) 
	{
		cout << "There was an error opening the input file" << endl;
		exit(1);
	}
}

[48T7M4Gy]

I meant that my two lines replace the corresponding two lines you had in your original snippet. So 89,90 replace 89,90 & 91

Just use the simple file reference, see where the file is created and put the real data file there.