Add .cpp file

Author: MuhammadMooazam

02)add.cpp

@@ -3,7 +3,7 @@ using namespace std;
 
 int main()
 {
-    int a = 5, b = 3;
+    int a = 5, b = 2;
     cout << "Sum of " << a << " and " << b << " is " << a + b;
     return 0;
 }

13)typeCasting.cpp

@@ -0,0 +1,13 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    int a = 343;
+    float b = 87.94;
+
+    cout << (float)a / 34 << endl;
+    cout << (int)b;
+
+    return 0;
+}

14)strings.cpp

@@ -0,0 +1,14 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    string name = "Mooazam";
+
+    cout << "The name is " << name << endl;
+    cout << "The length of name is " << name.length() << endl;
+    cout << "The name is " << name.substr(1, 155) << endl;
+    cout << "The name is " << name.substr(2, 3);
+
+    return 0;
+}

15)pointers.cpp

@@ -0,0 +1,15 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    float a = 34.34;
+    float *ptra;
+    ptra = &a;
+    cout << "The value of a is " << a << endl;
+    cout << "The value of a is " << *ptra << endl;
+    cout << "The address of a is " << &a << endl;
+    cout << "The address of a is " << ptra << endl;
+
+    return 0;
+}