C++ Programming Code Examples
C++ > Arrays and Matrices Code Examples
C++ Program to Add Two Matrix Using Multi-dimensional Arrays
/* C++ Program to Add Two Matrix Using Multi-dimensional Arrays
This program takes two matrices of order r*c and stores it in two-dimensional array. Then, the program adds these two matrices and displays it on the screen.
In this program, user is asked to entered the number of rows r and columns c. The value of r and c should be less than 100 in this program.
The user is asked to enter elements of two matrices (of order r*c).
Then, the program adds these two matrices, saves it in another matrix (two-dimensional array) and displays it on the screen. */
#include <iostream>
using namespace std;
int main()
{
int r, c, a[100][100], b[100][100], sum[100][100], x, j;
cout << "Enter number of rows (between 1 and 100): ";
cin >> r;
cout << "Enter number of columns (between 1 and 100): ";
cin >> c;
cout << endl << "Enter elements of 1st matrix: " << endl;
// Storing elements of first matrix entered by user.
for(x = 0; x < r; ++x)
for(j = 0; j < c; ++j)
{
cout << "Enter element a" << x + 1 << j + 1 << " : ";
cin >> a[x][j];
}
// Storing elements of second matrix entered by user.
cout << endl << "Enter elements of 2nd matrix: " << endl;
for(x = 0; x < r; ++x)
for(j = 0; j < c; ++j)
{
cout << "Enter element b" << x + 1 << j + 1 << " : ";
cin >> b[x][j];
}
// Adding Two matrices
for(x = 0; x < r; ++x)
for(j = 0; j < c; ++j)
sum[x][j] = a[x][j] + b[x][j];
// Displaying the resultant sum matrix.
cout << endl << "Sum of two matrix is: " << endl;
for(x = 0; x < r; ++x)
for(j = 0; j < c; ++j)
{
cout << sum[x][j] << " ";
if(j == c - 1)
cout << endl;
}
return 0;
}
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