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One of the built-in datatypes.
The usual C datatypes, nothing special.
Composite datatypes are the datatypes which can be constructed with in a program by using prmitive datatypes and other composite types.the act of constructing a composite data type is called composition..............
structure is a collection of variables of different datatypes.
In different languages we have different datatypes . Like in c++ we have int for integers , string for strings . In database we have datatypes, number for storing integer and varchar2 for storing string or characters.Like in languages like c we have datatypes such as char for characters , int for integers etc . In database we have datatype to denote the type of the field example numbers for storing integer, Varchar for characters.
there are many predefined words in c.. some are void,datatypes,printf,scanf etc
all the three are user defined datatypes
short int int long int double float char these are all datatypes
An abstract class is any class definition that contains at least one pure-virtual function. class AbstractClass { public: virtual void DoSomething()=0; // Pure-virtual. };
Perhaps the link in the related links box will help you.
Unlike abstract class in C++, the abstract class in C# does not have any methods defined as virtual by default. The concept of virtual are not the same between C# and C++, either. Any virtual method must be defined explicitly in C#. Related to abstract methods - interestingly, an abstract class in C# does not have to have any abstract methods. However, the reverse, if a class need to have at least one abstract method, that class must be defined as abstract.
They differ insofar as C does not use object-oriented programming at all -- there are no classes (only structures), therefore there was nothing to abstract. C++ (which literally means 'the successor to C') is an extension of C that primarily adds object-orientated support to the language. Everything you can do in C you can also do in C++, but with the added benefits of OOP you can do a whole lot more, more easily, including the creation of abstract data types.