I am having a problem adding two matrices in c++ here are theinstructions... If

Question

I am having a problem adding two matrices in c++ here are theinstructions...

If A and B are two m x n matrices, their sum is defined as follows:If Aij and Bij are the entries int ith row and jth column of A andB, respectively, then Aij + Bij is the entry in the ith row and jthcolumn of their sum, which will also be an m x n matrix. Write a program to read two m x n matrices, display them, andcalculate and display their sum...

The errors I am getting are as follows...

subscript requires array or pointer type (this error comes up 6times for me)

Here is my code...

#include <iostream>
using namespace std;

//Display functions
void enterMatrices();
void sumOfMatrices();
void displaySumMatrix();

int main ()
{
    //function to enter two matrices
    enterMatrices();

    //function to calculate sum of matrices
    sumOfMatrices();

    //function to display the sum matrix
    displaySumMatrix ();


    //return a value
    return 0;
}

//enterMatrices function
void enterMatrices()
{
    //Declare vairables
    int matrix1Rows, matrix1Columns, matrix2Rows,matrix2Columns, matrix1, matrix2;

    //Have user enter in first matrix
    cout << "Please enter the rows and columsnfor your first matrix.";
    cout << "Enter the rows of the firstmatrix: ";
    cin >> matrix1Rows;
    cout << "Enter the columns of the firstmatrix: ";
    cin >> matrix1Columns;

    //for statement enter the value of rows inmatrix 1
    for (int i = 0; i < matrix1Rows; i++)
    {
        cout << "Please enterthe values of row " << i + 1 << endl;
       
        //for statement to enter thevalue of columns in matrix 1
        for (int j = 0; j <matrix1Columns; j++)
        {
            cin>> matrix1[i][j];
        }
    }

    //Have user enter in second matrix
    cout << "Please enter the rows and columsnfor your first matrix.";
    cout << "Enter the rows of the secondmatrix: ";
    cin >> matrix2Rows;
    cout << "Enter the columns of the secondmatrix: ";
    cin >> matrix2Columns;

    //for statement to enter value of rows in matrix2
    for (int i = 0; i < matrix2Rows; i++)
    {
        cout << "Please enterthe values of row" << i + 1 << endl;
       
        //for statement to entervalue of rows in matrix 2
        for (int j = 0; j <matrix2Columns; j++)
        {
            cin>> matrix2[i][j];
        }
    }
}

//Function to compute the sum of the matrices
void sumOfMatrices()
{
    //declare variables
    int matrix1Rows, matrix2Columns, matrix1Columns,matrix2Rows, sumMatrix, matrix1, matrix2;

    //Determine if correct matrices to ass
    if (matrix1Rows == matrix2Columns &&matrix1Columns == matrix2Rows)
    {
        for (int i = 0; i <matrix1Rows; i++)
        {
            for (int j= 0; j < matrix1Columns; i++)
               sumMatrix[i][j] = matrix1[i][j] +matrix2[i][j];
        }
    }

    else
    cout << "Incorrect matrix. Pleasetry again later!";

    //Exit the program if incorrect
    exit(0);      

}

//function to display the sum of the matrix
void displaySumMatrix ()
{
    //Declare variables
    int matrix1Rows, matrix2Columns, sumMatrix;

    for (int i = 0; i < matrix1Rows; i++)
    {
        cout << "| ";
       
        for (int j = 0; j <matrix2Columns; j++)
            cout<< setw(5) << sumMatrix[i][j];
            cout<< " | " << endl;
    }
}

Explanation / Answer

please rate - thanks this is functions, reuse them #include #include using namespace std; //Display functions void enterMatrices(int[][20],int,int); void sumOfMatrices(int[][20],int[][20],int[][20],int,int); void displaySumMatrix(int[][20],int,int); int main () {//Declare vairables int m,n,mat1[20][20],mat2[20][20],mat3[20][20]; coutm; coutn;     //function to enter two matrices     cout

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