C++ - Matrix Addition and Subtraction with out using classes

I have given the program for matrix addition and subtraction in one function. This is a simple version.

To access the more flexible and enhanced version using the class CMatrix is using operator overloading +, -, =, ==, >> and << along with copy constructor, click here.

Source Code

#include <stdio.h>

#include <iostream>

#include <tchar.h>

#include <math.h>

int main()

{

int row1, col1;

double matrixA[24][24];

double matrixB[24][24];

double matrixC[24][24];

// Init Array

for(int i = 0; i < 24; i++)

{

for(int j = 0; j < 24; j++)

{

matrixA[i][j] = 0;

matrixB[i][j] = 0;

matrixC[i][j] = 0;

}

}

// Input the rows and cols of the matrix A and B

std::cout << "Enter rows and columns of the Matrix A and B: ";

std::cin >> row1;

std::cin >> col1;

// Input for Matrix A

{

for(int i = 0; i < row1; i++)

{

for(int j = 0; j < col1; j++)

{

std::cout << "Input For Matrix A Row: " << i + 1 << " Col: " << j + 1 << " = ";

std::cin >> matrixA[i][j];

}

std::cout << "\n";

}

std::cout << "\n";

}

// Input for Matrix B

{

for(int i = 0; i < row1; i++)

{

for(int j = 0; j < col1; j++)

{

std::cout << "Input For Matrix B Row: " << i + 1 << " Col: " << j + 1 << " = ";

std::cin >> matrixB[i][j];

}

std::cout << "\n";

}

std::cout << "\n";

}

// Matrix C = A + B

{

for(int i = 0; i < row1; i++)

for(int j = 0; j < col1; j++)

matrixC[i][j] += matrixA[i][j] + matrixB[i][j];

}

// Display Matrix C = A + B

{

std::cout << "\n\nMatrix C = A + B : " << " Rows: " << row1 << " Cols: " << col1 << "\n\n";

for(int i = 0; i < row1; i++)

{

std::cout << " | ";

for(int j = 0; j < col1; j++)

std::cout << matrixC[i][j] << " ";

std::cout <<  "|\n";

}

std::cout << "\n\n";

}

return 0;

}

Output

Enter rows and columns of the Matrix A and B: 3

3

Input For Matrix A Row: 1 Col: 1 = 3

Input For Matrix A Row: 1 Col: 2 = 3

Input For Matrix A Row: 1 Col: 3 = 3

Input For Matrix A Row: 2 Col: 1 = 6

Input For Matrix A Row: 2 Col: 2 = 6

Input For Matrix A Row: 2 Col: 3 = 6

Input For Matrix A Row: 3 Col: 1 = 9

Input For Matrix A Row: 3 Col: 2 = 9

Input For Matrix A Row: 3 Col: 3 = 9

Input For Matrix B Row: 1 Col: 1 = 2

Input For Matrix B Row: 1 Col: 2 = 2

Input For Matrix B Row: 1 Col: 3 = 2

Input For Matrix B Row: 2 Col: 1 = 4

Input For Matrix B Row: 2 Col: 2 = 4

Input For Matrix B Row: 2 Col: 3 = 4

Input For Matrix B Row: 3 Col: 1 = 6

Input For Matrix B Row: 3 Col: 2 = 6

Input For Matrix B Row: 3 Col: 3 = 6

Matrix C = A + B :  Rows: 3 Cols: 3

|  5  5  5 |

| 10 10 10 |

| 15 15 15 |