The two terms "type casting" and "type conversion" occur when there is a need to convert one data type to another. When the two types are compatible with each other, then the conversion of one type to other is done automatically by the compiler. However there is a basic difference between type conversion and type casting i.e. type conversion is done "automatically" by compiler whereas, type casting is to be "explicitly done" by the programmer. Let's discuss the difference both type casting and … [Read more...]

Association of a 'function definition' to a 'function call' or an association of a 'value' to a 'variable', is called 'binding'. During compilation, every 'function definition' is given a memory address; as soon as function calling is done, control of program execution moves to that memory address and get the function code stored at that location executed, this is binding of 'function call'  to 'function definition'. Binding can be classified as 'static binding' and 'dynamic binding'. If it's … [Read more...]

As we discussed earlier, a variable is a name, given to a memory location and it must be declared before it is used. In C, all the variables are declared at the starting of the program. In C++, variables can be declared, at any point of time, before they are used in the instructions. Variables are further classified into 'local' and 'global' variable, which is the main topic of our discussion. Here the main difference between a local and a global variable is that, a local variable is declared … [Read more...]

The word 'identifier' clearly defines itself, an identifier is a name given to an entity, which distinctly identifies an entity in a program at the time of its execution. Variable is also an identifier, its name uniquely identifies itself in a program. Here, the fundamental difference between an identifier and variable is that an identifier is a "name given to entity" in a program whereas, a variable is a "name given to memory location", that is used to hold value, which may get modified during … [Read more...]

Every language has keywords and identifiers, which are only understood by its compiler. Keywords are predefined reserved words, which possess special meaning. Each keyword defines the "type" declared data. Keywords should not be used as identifiers. An identifier is a unique name given to a particular variable, function or label of class in the program. To create a variable both a keyword and an identifier are bind together. This content further elaborates the difference between keyword and an … [Read more...]

which classPolymorphism is one of the crucial features of OOP.  It simply means 'using one name for multiple forms'. Polymorphism can be implemented using 'function overloading', 'operator overloading' and 'virtual function'. Both, 'overloading' and 'overriding' implies the concept of polymorphism. Here, 'overloading' is compile time polymorphism and 'overriding' is run time polymorphism. Studying further, if we talk about the major difference in 'overloading' and 'overriding'. In 'overloading' … [Read more...]

Sometimes it is required to initialize some part of an object before it can be utilized. For example, we are operating on the stack, before we perform any action, the top of the stack must always be set to zero. This feature of automatic initialization is performed through 'Constructor'. Likely, if an object needs to execute some code before it is destroyed. For example, if an object needs to close a file that it had opened, before its destruction. It can be performed with the help of … [Read more...]

Procedure-oriented Programming(POP) and Object-oriented programming(OOP) both are the programming approaches, which uses high-level language for programming.A Program can be written in both the languages, but if the task is highly complex, OOP operates well as compared to POP. In POP, the 'data security' is at risk as data freely moves in the program, as well as, 'code reusability' is not achieved which makes the programming lengthy, and hard to understand. Large programs lead to more bugs, and … [Read more...]

Inheritance strongly supports the concept of reusability i.e. newly created class reuses the properties of already existing ones. Access specifier decides the way in which the base class member will be inherited by the derived class. There are many ways to achieve inheritance single, multiple, Hierarchical, Multilevel, Hybrid. Whereas our main topic of discussion is the difference between single and multiple inheritance. In single inheritance, we do have only one base class which is inherited by … [Read more...]