Can't multiply two 5x5 matrices

[aidan118]

I'm very new to c++ and I'm confused as to why my code isn't working. I feel it's an issue with the final array (array3). I don't know what though. If anyone can help out it'd be appreciated :)

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

using namespace std;

int main(){

    int array1[5][5];
    int array2[5][5];
    int array3[5][5];
    string infilename1, infilename2, mystring1, mystring2;
    int i,j,k;

        // Ask for file path and name of file
    cout << "What is the file path and name of the first file?" << endl;
    cin >> infilename1;

        // Ask for file path and name of file
    cout << "What is the file path and name of the second file?" << endl;
    cin >> infilename2;

    // After user gives program path file, it will find the files and opens them.
    ifstream inFile1;
    inFile1.open(infilename1.c_str());

    ifstream inFile2;
    inFile2.open(infilename2.c_str());


    for(int i=0; i<5; i++){
        for(int j =0; j<5; j++){

            getline(inFile1, mystring1, ',');


            array1[i][j] = stoi(mystring1);

            cout << array1[i][j] << endl;
        }
    }

        for( i=0; i<5; i++){
        for( j =0; j<5; j++){

            getline(inFile2, mystring2, ',');


            array2[i][j] = stoi(mystring2);

            cout << array2[i][j] << endl;
        }
    }

        // Multiplying matrix a and b and storing in array3.
    for(i = 0; i < 5; i++){
        for(j = 0; j < 5; j++){
            for(k = 0; k < 5; k++)
            {
                array3[i][j] == array1[i][k] * array2[k][j];
            }
    }
}
    // Displaying the multiplication of two matrix.
    cout << endl << "Output Matrix: " << endl;
    for(i = 0; i < 5; ++i)
    for(j = 0; j < 5; ++j)
    {
        cout << " " << array3[i][j];
    }


    return 0;
}

[lastchance]

You are MULTIPLYING ... STRINGS !!!

The rest of us multiply numbers.

[aidan118]

Yeah sorry, silly mistake, but I've tried amending it and it still doesn't work.

[tpb]

You have a == instead of = for your assignment to array3.
And you probably want some newlines between the rows of the output matrix.
Some functions wouldn't hurt, either!