This C++ program demonstrates the use of keyword friend in classes. The program creates two classes ‘X’ and ‘Y’ and declares one class as ‘friend’ in another. By declaring friend, we mean that the friend class ‘Y’ will gain access to all the data members of the class ‘X’. The member functions of the friend … Read more
This C++ program demonstrates user-defined exceptions. The program derives an exception class from the standard exception class named Divide_By_Zero_Exception. The try block throws the Divide_By_Zero_Exception object and catch block handles it by executing the what() member function. Here is the source code of the C++ program which demonstrates user-defined exceptions. The C++ program is successfully … Read more
This C++ Program which implements atol function which converts a C++ string to an integer value. The function atol( ) skips any trailing blanks and alphabets and if the string iterator has reached the end of the string, a negative value is returned to indicate that no digit is present in the string else the … Read more
This C++ Program which illustrates the use of enumerations. The program creates an enumeration of months, creates an enumeration variable, assigns it a month value and prints a comment on the current month. Here is source code of the C++ program which illustrates the use of enumerations. The C++ program is successfully compiled and run … Read more
This C++ program demonstrates the order of constructor and destructor calls for globally and locally initialized objects. The constructors of global objects are initialized earlier than local objects and the destructors for local objects are called earlier than global objects. Thus we can say that scope of a global object is larger than a local … Read more
This C++ program illustrates copy-constructor in a class. A copy constructor is a special constructor for a class that is used to make a copy of an existing instance of the class. A copy-constructor looks like a constructor with an object of same class as an argument. Here is the source code of the C++ … Read more
This C++ program demonstrates the use of static members in a class. A static data member is shared by all objects of a class. We can put a static data member inside a class but we would have to initialize it outside the class using scope resolution operator (::). Here is the source code of … Read more
This C++ program illustrates the concept of mutable keyword in classes. The keyword mutable enables a const member function to change a variable. This explains the concept of logical const-ness of the object where the object changes in a way that it is not apparent through a public interface. Here is the source code of … Read more
This C++ program illustrates the const keyword with member functions. The functions with a const keyword specified before the function definition prevents the calling of non-const data members for a given instance of the class. It also prevents t Here is the source code of the C++ program which illustrates the const keyword with member … Read more
This is a C++ Program to add two Complex Numbers. Problem Description We have to input the real and imaginary parts of two complex numbers separately and add them using classes and objects in C++. Expected Input and Output 1. When the real and imaginary part both are positive. First Complex Number = 5 + … Read more
