├── Inheritance example.cpp
├── Inheritance.cpp
├── LICENSE
├── Parameterized constructor.cpp
├── Shape and perimeter.cpp
├── callbyvalue_and_callbyrefence2.cpp
├── constructoranddestructor4.cpp
├── matrix_operations3.cpp
└── palindromecheck1.cpp


/Inheritance example.cpp:
--------------------------------------------------------------------------------
 1 | // C++ program to demonstrate how to inherit a class
 2 | #include <iostream>
 3 | using namespace std;
 4 |   
 5 | // Base class that is to be inherited
 6 | class Parent {
 7 | public:
 8 |     // base class members
 9 |     int id_p;
10 |     void printID_p()
11 |     {
12 |         cout << "Base ID: " << id_p << endl;
13 |     }
14 | };
15 | 
16 | // Sub class or derived publicly inheriting from Base
17 | // Class(Parent)
18 | class Child : public Parent {
19 | public:
20 |     // derived class members
21 |     int id_c;
22 |     void printID_c()
23 |     {
24 |         cout << "Child ID: " << id_c << endl;
25 |     }
26 | };
27 | 
28 | // main function
29 | int main()
30 | {
31 |     // creating a child class object
32 |     Child obj1;
33 | 
34 |     // An object of class child has all data members
35 |     // and member functions of class parent
36 |     // so we try accessing the parents method and data from
37 |     // the child class object.
38 |     obj1.id_p = 7;
39 |     obj1.printID_p();
40 | 
41 |     // finally accessing the child class methods and data
42 |     // too
43 |     obj1.id_c = 91;
44 |     obj1.printID_c();
45 | 
46 |     return 0;
47 | }
48 | 


--------------------------------------------------------------------------------
/Inheritance.cpp:
--------------------------------------------------------------------------------
 1 | #include <iostream>
 2 | using namespace std;
 3 | 
 4 | class Animal {
 5 | public:
 6 |     void sound() {
 7 |         cout << "Some sound" << endl;
 8 |     }
 9 | };
10 | 
11 | class Dog : public Animal {
12 | public:
13 |     void sound() {
14 |         cout << "Bark" << endl;
15 |     }
16 | };
17 | 
18 | class Cat : public Animal {
19 | public:
20 |     void sound() {
21 |         cout << "Meow" << endl;
22 |     }
23 | };
24 | 
25 | int main() {
26 |     Dog d;
27 |     Cat c;
28 |     d.sound();
29 |     c.sound();
30 |     return 0;
31 | }
32 | 


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/Parameterized constructor.cpp:
--------------------------------------------------------------------------------
 1 | #include <iostream>
 2 | using namespace std;
 3 | 
 4 | class Person {
 5 | private:
 6 |     string name;
 7 |     int age;
 8 | 
 9 | public:
10 |     // Parameterized constructor
11 |     Person(string n, int a) {
12 |         name = n;
13 |         age = a;
14 |         cout << "Parameterized Constructor called. Name: " << name << ", Age: " << age << endl;
15 |     }
16 | 
17 |     // Destructor
18 |     ~Person() {
19 |         cout << "Destructor called for " << name << endl;
20 |     }
21 | 
22 |     // Method to display person details
23 |     void display() {
24 |         cout << "Name: " << name << ", Age: " << age << endl;
25 |     }
26 | };
27 | 
28 | int main() {
29 |     // Creating an object of Person using parameterized constructor
30 |     Person person1("Anshuman", 21);
31 |     person1.display();
32 | 
33 |     return 0;
34 | }
35 | 


--------------------------------------------------------------------------------
/Shape and perimeter.cpp:
--------------------------------------------------------------------------------
 1 | #include <iostream>
 2 | using namespace std;
 3 | 
 4 | class Shape {
 5 |     double radius, length, width;
 6 | public:
 7 |     Shape(double r) : radius(r), length(0), width(0) {}
 8 |     Shape(double l, double w) : length(l), width(w), radius(0) {}
 9 |     double perimeterCircle() { return 2 * 3.14159 * radius; }
10 |     double perimeterRectangle() { return 2 * (length + width); }
11 |     ~Shape() {}
12 | };
13 | 
14 | int main() {
15 |     Shape circle(5.0);
16 |     cout << "Perimeter of circle: " << circle.perimeterCircle() << endl;
17 |     
18 |     Shape rectangle(10.0, 5.0);
19 |     cout << "Perimeter of rectangle: " << rectangle.perimeterRectangle() << endl;
20 |     
21 |     return 0;
22 | }
23 | 


--------------------------------------------------------------------------------
/callbyvalue_and_callbyrefence2.cpp:
--------------------------------------------------------------------------------
 1 | #include <iostream>
 2 | using namespace std;
 3 | 
 4 | void callByValue(int x) {
 5 |     x = 20;
 6 | }
 7 | 
 8 | void callByReference(int &x) {
 9 |     x = 20;
10 | }
11 | 
12 | int main() {
13 |     int a = 10;
14 |     int b = 10;
15 | 
16 |     callByValue(a);
17 |     cout << "a = " << a << endl;
18 | 
19 |     callByReference(b);
20 |     cout << "b = " << b << endl;
21 | 
22 |     return 0;
23 | }
24 | 


--------------------------------------------------------------------------------
/constructoranddestructor4.cpp:
--------------------------------------------------------------------------------
 1 | #include <iostream>
 2 | using namespace std;
 3 | 
 4 | class Shape {
 5 | private:
 6 |     double radius;
 7 |     double length;
 8 |     double width;
 9 | 
10 | public:
11 |     // Constructor for Circle (radius)
12 |     Shape(double r) : radius(r), length(0), width(0) {
13 |         cout << "Circle created with radius: " << radius << endl;
14 |     }
15 | 
16 |     // Constructor for Rectangle (length, width)
17 |     Shape(double l, double w) : radius(0), length(l), width(w) {
18 |         cout << "Rectangle created with length: " << length << " and width: " << width << endl;
19 |     }
20 | 
21 |     // Destructor
22 |     ~Shape() {
23 |         cout << "Shape destroyed." << endl;
24 |     }
25 | 
26 |     // Function to calculate the perimeter of the circle
27 |     double perimeterCircle() {
28 |         return 2 * 3.14159 * radius;
29 |     }
30 | 
31 |     // Function to calculate the perimeter of the rectangle
32 |     double perimeterRectangle() {
33 |         return 2 * (length + width);
34 |     }
35 | };
36 | 
37 | int main() {
38 |     // Create a circle with radius 5
39 |     Shape circle(5);
40 |     cout << "Perimeter of Circle: " << circle.perimeterCircle() << endl;
41 | 
42 |     // Create a rectangle with length 10 and width 5
43 |     Shape rectangle(10, 5);
44 |     cout << "Perimeter of Rectangle: " << rectangle.perimeterRectangle() << endl;
45 | 
46 |     return 0;
47 | }
48 | 


--------------------------------------------------------------------------------
/matrix_operations3.cpp:
--------------------------------------------------------------------------------
 1 | #include <iostream>
 2 | using namespace std;
 3 | 
 4 | const int SIZE = 3;  // For simplicity, using 3x3 matrices
 5 | 
 6 | void inputMatrix(int matrix[SIZE][SIZE]) {
 7 |     for (int i = 0; i < SIZE; i++)
 8 |         for (int j = 0; j < SIZE; j++)
 9 |             cin >> matrix[i][j];
10 | }
11 | 
12 | void printMatrix(int matrix[SIZE][SIZE]) {
13 |     for (int i = 0; i < SIZE; i++) {
14 |         for (int j = 0; j < SIZE; j++)
15 |             cout << matrix[i][j] << " ";
16 |         cout << endl;
17 |     }
18 | }
19 | 
20 | void addMatrix(int a[SIZE][SIZE], int b[SIZE][SIZE], int result[SIZE][SIZE]) {
21 |     for (int i = 0; i < SIZE; i++)
22 |         for (int j = 0; j < SIZE; j++)
23 |             result[i][j] = a[i][j] + b[i][j];
24 | }
25 | 
26 | void subtractMatrix(int a[SIZE][SIZE], int b[SIZE][SIZE], int result[SIZE][SIZE]) {
27 |     for (int i = 0; i < SIZE; i++)
28 |         for (int j = 0; j < SIZE; j++)
29 |             result[i][j] = a[i][j] - b[i][j];
30 | }
31 | 
32 | void multiplyMatrix(int a[SIZE][SIZE], int b[SIZE][SIZE], int result[SIZE][SIZE]) {
33 |     for (int i = 0; i < SIZE; i++)
34 |         for (int j = 0; j < SIZE; j++) {
35 |             result[i][j] = 0;
36 |             for (int k = 0; k < SIZE; k++)
37 |                 result[i][j] += a[i][j] * b[i][j];
38 |         }
39 | }
40 | 
41 | void transposeMatrix(int matrix[SIZE][SIZE], int result[SIZE][SIZE]) {
42 |     for (int i = 0; i < SIZE; i++)
43 |         for (int j = 0; j < SIZE; j++)
44 |             result[j][i] = matrix[i][j];
45 | }
46 | 
47 | int main() {
48 |     int a[SIZE][SIZE], b[SIZE][SIZE], result[SIZE][SIZE], choice;
49 | 
50 |     cout << "Enter elements of first matrix (3x3):" << endl;
51 |     inputMatrix(a);
52 |     cout << "Enter elements of second matrix (3x3):" << endl;
53 |     inputMatrix(b);
54 | 
55 |     cout << "Choose operation: 1. Addition  2. Subtraction  3. Multiplication  4. Transpose" << endl;
56 |     cin >> choice;
57 | 
58 |     switch (choice) {
59 |         case 1:
60 |             addMatrix(a, b, result);
61 |             cout << "Resultant Matrix (Addition):" << endl;
62 |             printMatrix(result);
63 |             break;
64 |         case 2:
65 |             subtractMatrix(a, b, result);
66 |             cout << "Resultant Matrix (Subtraction):" << endl;
67 |             printMatrix(result);
68 |             break;
69 |         case 3:
70 |             multiplyMatrix(a, b, result);
71 |             cout << "Resultant Matrix (Multiplication):" << endl;
72 |             printMatrix(result);
73 |             break;
74 |         case 4:
75 |             transposeMatrix(a, result);
76 |             cout << "Transpose of First Matrix:" << endl;
77 |             printMatrix(result);
78 |             break;
79 |         default:
80 |             cout << "Invalid choice!" << endl;
81 |     }
82 | 
83 |     return 0;
84 | }
85 | 


--------------------------------------------------------------------------------
/palindromecheck1.cpp:
--------------------------------------------------------------------------------
 1 | #include <iostream>
 2 | #include <string>
 3 | using namespace std;
 4 | 
 5 | // Function to check if a number is a palindrome
 6 | int isNumberPalindrome(int num) {
 7 |     int original = num, reversed = 0;
 8 |     while (num > 0) {
 9 |         int digit = num % 10;
10 |         reversed = reversed * 10 + digit;
11 |         num /= 10;
12 |     }
13 |     if (original == reversed) return 1;
14 |     return 0;
15 | }
16 | 
17 | // Function to check if a string is a palindrome
18 | int isStringPalindrome(string str) {
19 |     int len = str.length();
20 |     for (int i = 0; i < len / 2; i++) {
21 |         if (str[i] != str[len - i - 1]) {
22 |             return 0;
23 |         }
24 |     }
25 |     return 1;
26 | }
27 | 
28 | int main() {
29 |     int number, numResult, strResult;
30 |     string text;
31 | 
32 |     // Checking number palindrome
33 |     cout << "Enter a number: ";
34 |     cin >> number;
35 |     numResult = isNumberPalindrome(number);
36 |     if (numResult == 1) {
37 |         cout << number << " is a palindrome number." << endl;
38 |     } else {
39 |         cout << number << " is not a palindrome number." << endl;
40 |     }
41 | 
42 |     // Checking string palindrome
43 |     cout << "Enter a string: ";
44 |     cin >> text;
45 |     strResult = isStringPalindrome(text);
46 |     if (strResult == 1) {
47 |         cout << text << " is a palindrome string." << endl;
48 |     } else {
49 |         cout << text << " is not a palindrome string." << endl;
50 |     }
51 | 
52 |     return 0;
53 | }
54 | 


--------------------------------------------------------------------------------