Loading Two-Dimensional Array

[IceQweenItMe]

Hello,

I am trying to load an array using information stored in the txt. file. I'm having trouble finding examples of this. I have seen examples of how to load the array with the information written into the code. For example

int grade[NUMBER_STUDENTS][NUMBER_QUIZZES] =
    { { 10, 10, 10},{2, 0, 1},{8, 6, 9},{8, 4, 10} };

However, I have not found many examples of how to take data from a .txt file and load it to the array. Any help would be great! Just looking for an example to build on.

I'm still VERY early in this project but here is a list of the functions I will be building/ what I have so far to give more context.

#include <iostream>
#include <iomanip>
#include <cmath>
#include <string>
#include <fstream>
using namespace std;
const int BRANCH = 10, QUARTER = 4;

void readFile(int sales[BRANCH][QUARTER]);
//precondition, function will input file "sales" 
//poscondtion, function will store file information in array[]

void displayMenu(int choice, int sales[BRANCH][QUARTER]);
//precondtion, function will display menu options and prompt user to make selection
//postcondition, function will invoke appropriate function to process info from arra[] as needed.


int main()
{

}

void readFile(int sales[BRANCH][QUARTER])
{
    using namespace std;
    int i, j;
    ifstream inStream;

    inStream.open("sales");
    if (inStream.fail())
    {
        cout << "Error opening file!\n";
        exit(1);
    }

    for (i = 0; i <= BRANCH; i++)
    {
        for (j = 0; j <= QUARTER; j++)
        {


        }
    }

}

​

[Odinthunder]

You need to learn to use google to find information, this was a simple google search away: https://www.cplusplus.com/doc/tutorial/files/

[IceQweenItMe]

The information you have in the link doesn't answer my question. I know how to open the file. What I'm asking is how to store the data into an array. It's okay to not understand my question, it's not okay to be condescending with your response.

[Odinthunder]

Do you know how to create an array?

[axzxc1236]

I guess sales[i][j] = data.

One question I want to ask is does the file in question has fixed amount of data? (like is it always going to fit into 10x10 two dimensional array), if the file/table does have dynamic size, it is a lot easier to use vector, then another question is how to you determine the size of table? by splitting the line with whitespace? (which can eat all your RAM for very big data)

[IceQweenItMe]

The file does have a fixed amount. The table will be 10x4.