This is how a class is defined, once a class is defined, then its object is created and the member functions are used. Obj.display() //Calling member function using class object This is a mere introduction to classes, we will discuss classes in detail throughout the C++ tutorial. Comments in C++ Programįor single line comments, use // before mentioning comment, likeĬout<<"single line" // This is single line commentįor multiple line comment, enclose the comment between /* and */ /*this isĬlasses name must start with capital letter, and they contain data Variables and member functions. cin and cout are same as scanf and printf, only difference is that you do not need to mention format specifiers like, %d for int etc, in cout & cin. Main(), is the function which holds the executing part of program its return type is int.Ĭout <<, is used to print anything on screen, same as printf in C language. NameSpace can be used by two ways in a program, either by the use of using statement at the beginning, like we did in above mentioned program or by using name of namespace as prefix before the identifier with scope resolution (::) operator. Namespace collects identifiers used for class, object and variables. Using namespace std, tells the compiler to use standard namespace. Header files contained predeclared function libraries, which can be used by users for their ease. Here iostream is a header file which provides us with input & output streams.
Header files are included at the beginning just like in C program. Here we will discuss one simple and basic C++ program to print "Hello this is C++" and its structure in parts with details and uses. You will come across lot of terms that you have already studied in C. In this section we will cover the basics of C++, it will include the syntax, Variables, operators, loop types, pointers, references and information about other requirements of a C++ program. 100+ C++ Programs with explanation and output.Abstract class and Pure Virtual Functions.
0 kommentar(er)
