C++ Program to perform Matrix Addition
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Perform Matrix Addition
In the following example, we will add the two given matrices (two-dimensional arrays).
Example
C++ Compiler
#include <iostream>
using namespace std;
int main()
{
int i, j, arr3[3][3];
int arr1[3][3] = {
{1, 1, 1},
{1, 1, 1},
{1, 1, 1}
};
int arr2[3][3] = {
{2, 2, 2},
{2, 2, 2},
{2, 2, 2}
};
cout << "Matrix A (3 x 3):\n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
cout << arr1[i][j] << " ";
cout << "\n";
}
cout << "\nMatrix B (3 x 3):\n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
cout << arr2[i][j] << " ";
cout << "\n";
}
cout << "\nMatrix Addition (A + B): \n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
{
arr3[i][j] = arr1[i][j] + arr2[i][j];
cout << arr3[i][j] << " ";
}
cout << "\n";
}
return 0;
}
Output
Matrix A (3 x 3):
1 1 1
1 1 1
1 1 1
Matrix B (3 x 3):
2 2 2
2 2 2
2 2 2
Matrix Addition (A + B):
3 3 3
3 3 3
3 3 3
In the following example, we will get the values for (3 x 3) Matrices A and B from the user and display the matrix addition.
Example
C++ Compiler
#include <iostream>
using namespace std;
int main()
{
int i, j, arr3[3][3], arr2[3][3], arr1[3][3];
cout << "Enter Matrix A (3 x 3):\n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
cin >> arr1[i][j];
}
cout << "\nEnter Matrix B (3 x 3):\n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
cin >> arr2[i][j];
}
cout << "\nMatrix Addition (A + B): \n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
{
arr3[i][j] = arr1[i][j] + arr2[i][j];
cout << arr3[i][j] << " ";
}
cout << "\n";
}
return 0;
}
Output
Enter Matrix A (3 x 3):
2 2 2
2 2 2
2 2 2
Enter Matrix B (3 x 3):
4 4 4
4 4 4
4 4 4
Matrix Addition (A + B):
6 6 6
6 6 6
6 6 6
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