add: cpp-programming-ques 06_operator friend 10

Author: webwithaman

06_operator_overloading_and_friend_function/00_questions.txt

@@ -62,7 +62,7 @@ Overload operator “!” to reverse the case of each alphabet in the string (Up
 
 10.Class Matrix
 {
-  int a[3][3];
+  int matrix[3][3],rows=3,cols=3;
 };
 Let m1 and m2 are two matrices. Find out m3=m1+m2 (use operator
 overloading).

06_operator_overloading_and_friend_function/10_overload_plus_for_matrix.cpp

@@ -0,0 +1,125 @@
+/*
+
+Class Matrix
+{
+  int matrix[3][3],rows=3,cols=3;
+};
+
+Let m1 and m2 are two matrices. Find out m3=m1+m2 (use operator
+overloading).
+
+*/
+
+// // Header files
+#include <iostream>
+#include <conio.h>
+#include <iomanip>
+
+// // use namespace
+using namespace std;
+
+// // define class Matrix
+class Matrix
+{
+
+private:
+    // // instance member variables
+    int matrix[3][3], rows = 3, cols = 3;
+
+public:
+    // // constructors
+    Matrix()
+    {
+    }
+
+    // // instance member function to input matrix
+    void inputMatrix()
+    {
+        for (int i = 0; i < rows; i++)
+        {
+            for (int j = 0; j < cols; j++)
+            {
+                cout << "\nEnter element[" << i << "][" << j << "] => ";
+                cin >> matrix[i][j];
+            }
+        }
+    }
+
+    // // instance member function to show matrix
+    void showMatrix()
+    {
+        for (int i = 0; i < rows; i++)
+        {
+            for (int j = 0; j < cols; j++)
+                cout << setw(4) << matrix[i][j];
+
+            cout << endl; // // Add New line
+        }
+    }
+
+    // // instance member function to set element
+    void setElement(int row, int col, int value)
+    {
+        if (row >= 0 && row < rows && col >= 0 && col < cols)
+            matrix[row][col] = value;
+        else
+            cout << "\nInvalid Index...";
+    }
+
+    // // instance member function to get element
+    int getElement(int row, int col)
+    {
+        if (row >= 0 && row < rows && col >= 0 && col < cols)
+            return matrix[row][col];
+        cout << "\nInvalid Index...";
+    }
+
+    // // overload binary plus (+) operator
+    Matrix operator+(Matrix m2)
+    {
+        Matrix temp;
+        for (int i = 0; i < rows; i++)
+        {
+            for (int j = 0; j < cols; j++)
+                temp.matrix[i][j] = matrix[i][j] + m2.matrix[i][j];
+        }
+        return temp;
+    }
+};
+
+// // Main Function Start
+int main()
+{
+
+    Matrix matrixA, matrixB, matrixC; // // create objects of Matrix class
+
+    cout << "\n>>>>>>>> Enter Two Matrices to Add <<<<<<<<<\n";
+
+    // // input elements of matrixA
+    cout << "\n>>>>>>>> Enter Elements of Matrix-A of Order 3 x 3 <<<<<<<<<\n";
+    matrixA.inputMatrix();
+
+    // // input elements of matrixB
+    cout << "\n>>>>>>>> Enter Elements of Matrix-B of Order 3 x 3 <<<<<<<<<\n";
+    matrixB.inputMatrix();
+
+    // // show matrixA
+    cout << "\n>>>>>>>> Matrix-A <<<<<<<<<\n";
+    matrixA.showMatrix();
+
+    // // show matrixB
+    cout << "\n>>>>>>>> Matrix-B <<<<<<<<<\n";
+    matrixB.showMatrix();
+
+    // // add matrices
+    matrixC = matrixA + matrixB;
+
+    // // show matrixC result of addition
+    cout << "\n>>>>>>>> Result of Addition Matrix-C <<<<<<<<<\n";
+    matrixC.showMatrix();
+
+    cout << endl; // Add new line
+    getch();
+    return 0;
+}
+// // Main Function End