C++ Tutorial 2

              

Let us know about different data type.

While doing programming in any programming language, you need to use various variables to store various information.

You may like to store information of various data types like character, wide character, integer, floating point, double floating point, boolean etc.

Following table lists down seven basic C++ data types:

Type	Keyword
Boolean	Bool
Character	Char
Integer	Int
Floating point	Float
Double floating point	Double
Valueless	Void
Wide character	wchar_t

Several of the basic data types can be modified using one or more of these type modifiers:

·        signed

·        unsigned

·        short

·        long

The following table shows the variable type, how much memory it takes to store the value in memory, and what their typical range is

Type	Typical Bit Width	Typical Range
Char	1byte	-127 to 127 or 0 to 255
unsigned char	1byte	0 to 255
signed char	1byte	-127 to 127
Int	4bytes	-2147483648 to 2147483647
unsigned int	4bytes	0 to 4294967295
signed int	4bytes	-2147483648 to 2147483647
short int	2bytes	-32768 to 32767
unsigned short int	Range	0 to 65,535
signed short int	Range	-32768 to 32767
long int	4bytes	-2,147,483,648 to 2,147,483,647
signed long int	4bytes	same as long int
unsigned long int	4bytes	0 to 4,294,967,295
Float	4bytes	+/- 3.4e +/- 38 (~7 digits)
Double	8bytes	+/- 1.7e +/- 308 (~15 digits)
long double	8bytes	+/- 1.7e +/- 308 (~15 digits)
wchar_t	2 or 4 bytes	1 wide character

Let us take example program use different data type …

#include<iostream.h>

Void main()

{

int a,b,sum,sub;

long int multiplay;

float divide;

cout<<”provide the value of a and b”;

cin>>a>>b;

sum=a+b;

sub=a-b;

multiplay=a*b;

divide=a/b;

cout<<”value after addition”<<sum;

cout<<”value after subtraction”<<sub;

cout<<”value after multiplication”<<multiplay;

cout<<value after division:<<divide;

 }

Explaination:

Cin-> it is used to provide the value by user

      Syntax-cin>>variable;

cout-> it is used to display the output or any content

    Syntax- cout<<"Content";

Author : Unknown

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