Add .cpp file

Author: MuhammadMooazam

01)helloWorld.cpp

@@ -0,0 +1,8 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    cout << "Hello World!";
+    return 0;
+}

03)userInput.cpp

@@ -0,0 +1,13 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    int a, b;
+    cout << "Enter first number: " << endl;
+    cin >> a;
+    cout << "Enter second number: " << endl;
+    cin >> b;
+    cout << "First number is " << a << " and second number is " << b;
+    return 0;
+}

04)operators.cpp

@@ -0,0 +1,33 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    int a = 5, b = 4;
+
+    cout << "Following are the Arithmetic operators:-" << endl;
+    cout << a << " + " << b << " = " << a + b << endl;
+    cout << a << " - " << b << " = " << a - b << endl;
+    cout << a << " * " << b << " = " << a * b << endl;
+    cout << a << " / " << b << " = " << a / b << endl;
+    cout << a << " % " << b << " = " << a % b << endl;
+    cout << a << "++ " << " = " << a++ << endl;
+    cout << a << "-- " << " = " << a-- << endl;
+    cout << "++" << a << " = " << ++a << endl;
+    cout << "--" << a << " = " << --a << endl << endl;
+
+    cout << "Following are the Comparision operators:-" << endl;
+    cout << a << " == " << b << " is " << (a == b) << endl;
+    cout << a << " != " << b << " is " << (a != b) << endl;
+    cout << a << " > " << b << " is " << (a > b) << endl;
+    cout << a << " < " << b << " is " << (a < b) << endl;
+    cout << a << " >= " << b << " is " << (a >= b) << endl;
+    cout << a << " <= " << b << " is " << (a <= b) << endl << endl;
+
+    cout << "Following are the Logical operators:-" << endl;
+    cout << "(a==b) && (a>b) is " << ((a == b) && (a > b)) << endl;
+    cout << "(a==b) || (a>b) is " << ((a == b) || (a > b)) << endl;
+    cout << "!(a==b) is " << (!(a == b)) << endl;
+
+    return 0;
+}

15)refrences.cpp

@@ -0,0 +1,18 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    string var1 = "Value1"; // var1 variable
+    string &var2 = var1;    // reference to var1
+
+    cout << "The value of var1 is " << var1 << endl;
+    cout << "The value of var2 is " << var2 << endl;
+
+    var1 = "Value2";
+
+    cout << "The new value of var1 is " << var1 << endl;
+    cout << "The new value of var2 is " << var2 << endl;
+
+    return 0;
+}

16)pointers.cpp

@@ -0,0 +1,23 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    float a = 2.2;
+    float *ptra;
+    ptra = &a;
+
+    cout << "The value of a is " << a << endl;
+    cout << "The value of &a is " << &a << endl;
+    cout << "The value of ptra is " << ptra << endl;
+    cout << "The value of *ptra is " << *ptra << endl;
+
+    a = 1.1;
+
+    cout << "The new value of a is " << a << endl;
+    cout << "The new value of &a is " << &a << endl;
+    cout << "The new value of ptra is " << ptra << endl;
+    cout << "The new value of *ptra is " << *ptra << endl;
+
+    return 0;
+}

17)OOPS.cpp

@@ -0,0 +1,25 @@
+#include <iostream>
+using namespace std;
+
+class Employee // Class
+{
+public:
+    string name;
+    int salary;
+
+    void printDetails() // Method
+    {
+        cout << "Name of our first employee is " << this->name << endl;
+        cout << "Salary of our first employee is " << this->salary << endl;
+    }
+};
+
+int main()
+{
+    Employee employee1; // Object
+    employee1.name = "Mooazam";
+    employee1.salary = 100000;
+    employee1.printDetails();
+
+    return 0;
+}