Primary data type in cpp, C/C++ Programming

What are Primary Data Types?

Integer can be defined according to the size of the data and it can be modified further by using keyword unsigned and signed.  Default declaration is signed; that is a variable can store negative and positive data, to hole only positive data the variable can be changed to unsigned variable which will store only positive data twice its original size.  Therefore the size of the data to be stored in a variable depends on type of declaration.

int x:  The x store from -32768 to 32767 since by default it is a signed integer it can store positive and negative number within that range.

unsigned int x:  The x store from 0 to 65535 since it is declared as signed integer it can store only positive number within that range.

The data type can be declared unsigned for long, char,  small int, and int only.  The double and float can be signed data only.

Void data type is used to declare a generic pointer. 

void *gptr;

 

int *ptr;

gptr = ptr;

char *cptr

cptr = gptr;

Valid only in C

cptr = (char *)gptr;  In C++ type casting operator must be used to change the data type.

Note: In C void pointer can be assigned to non-void pointer without using cast. Where as in C++ cast operator must be used to assign void pointer to non-void pointer. 

Integer data types are of three types; octal, hexadecimal and decimal int x = 123; is decimal data type

int x = 0123; is octal data type int x = 0x12A; is hexadecimal

The primary data type like long, integer

 

Posted Date: 9/20/2012 7:30:31 AM | Location : United States







Related Discussions:- Primary data type in cpp, Assignment Help, Ask Question on Primary data type in cpp, Get Answer, Expert's Help, Primary data type in cpp Discussions

Write discussion on Primary data type in cpp
Your posts are moderated
Related Questions
in mobiles mumbers to alphabets

Consider the following mathematical function: (a) Write a procedure that computes f by means of a recursive process (b) Write a procedure that computes f by means of an

Create a class  called  ticketSelling that stores booking information of a single performance on a single day and sells the tickets of the performance. The class should include at


Program for Memory Optimization of C / OpenCL Code Project Description: This is possibly a very simple project for someone with an excellent knowledge of C and OpenCL. That,

Program is to perform string operations: Program is to perform string operation without using in built functions using classes and object void mainmenu()    {    clrs

#Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b.   #include float start_poi

A: A dangling pointer arises while you use the address of an object after its lifetime is end. It may occur in situations such as returning addresses of automatic variables from a

Project Description: Online game development Online Live Baccarat Game is needed - client program. - server program(IOCP or ect..). - web program(ASP or PHP or etc..

luminous jewel polishing necklace, c/c++ programming