ptr_func_eg_11.cpp

//Addition of two Matrix
#include <iostream>
int input(int [], int, char);
void display(int [], int);
int add(int [], int [], int [], int );
using namespace std;
int main()
{
    int m;
    cout << "Enter the size of the  array: ";
    cin >> m;
    int a[m], b[m], result[m];
    char arr1 = 'a';
    char arr2 = 'b';
    int size = sizeof(a) / sizeof(a[0]);
    cout << "Enter the elements of 1st  Matrix: " << endl;
    input(a, size, arr1);
    cout << "Displaying the  Matrix: " << endl;
    display(a, size);
    cout << "Enter the elements of  2nd Matrix: " << endl;
    input(b, size, arr2);
    cout << "Displaying the  Matrix: " << endl;
    display(b, size);
    add(a, b, result, size);
    cout << "Displaying the  Addition of 2 Square Matrix: " << endl;
    display(result, size);

    return 0;
}

int input(int a[], int size, char arr)
{
    if (arr == 'a')
    {
        for (int i = 0; i < size; i++)
        {
            cout << "a[" << i << "]: ";
            cin >> *(a + i);
        }
    }
    else
    {
        for (int i = 0; i < size; i++)
        {
            cout << "b[" << i << "]: ";
            cin >> *(a + i);
        }
    }

    cout << endl;
    return *(a + size);
}
void display(int a[], int size)
{
    cout << "[";
    for (int i = 0; i < size; i++)
    {
        cout << *(a + i) << " ";
    }
    cout << "]";
    cout << endl;
}
int add(int arr1[], int arr2[], int res[], int size)
{
    for (int i = 0; i < size; i++)
    {
        *(res + i) = *(arr1 + i) + *(arr2 + i);
    }
    return *(res + size);
}