Data Type in C++ - Ebhor.com

There are four types of data type in C language. They are as follows:

Types	Data Types
Basic data types	int, char, float, double, boolean
User Defined data type	structure, union, enum
Derived data type	Pointer, array, function

Basic Data Types In C Language

Integer Data Type

Integer data ( example 1,2,3,4,5,6, ….. etc. ) is stored in int ,short and long data type.

Type	Storage size	Value range
int	2 or 4 bytes	-32,768 to 32,767 or -2,147,483,648 to 2,147,483,647
unsigned int	2 or 4 bytes	0 to 65,535 or 0 to 4,294,967,295
short	2 bytes	-32,768 to 32,767
unsigned short	2 bytes	0 to 65,535
long	4 bytes	-2,147,483,648 to 2,147,483,647
unsigned long	4 bytes	0 to 4,294,967,295

Example: Addition of integer numbers

#include <iostream>
using namespace std;
int main()
{
	int x = 10;	//  initialize integer variable x to 10	
	int y=25;	//  initialize integer variable y to 25	
	int z = x + y;	// add the values of variable x &y and store in variable z
	cout<<"Sum of x+y = " << z;
}

#include <iostream>

using namespace std;

int main()

{

int x = 10; // initialize integer variable x to 10

int y=25; // initialize integer variable y to 25

int z = x + y; // add the values of variable x &y and store in variable z

cout<<"Sum of x+y = " << z;

}

OUTPUT

Sum of x+y = 35

1	Sum of x+y = 35

Character Data Type

Character data ( example ‘a’ , ‘b’ , ‘f’, ….. etc. ) is stored in “char” data type.

Type	Storage size	Value range
char	1 byte	-128 to 127 or 0 to 255
unsigned char	1 byte	0 to 255
signed char	1 byte	-128 to 127

Example: Declare and initialize integer variable.

#include <iostream>
using namespace std;
int main()
{
	char c1 = 'A';	//  initialize character variable c1 to A 	
	char c2 = 66;	// ASCII value of 66 is B, in c2 character B will store

	cout << "value of variable c1 &c2 =" << c1 <<"  "<< c2;
	return 0;
}

#include <iostream>

using namespace std;

int main()

{

char c1 = 'A'; // initialize character variable c1 to A

char c2 = 66; // ASCII value of 66 is B, in c2 character B will store

cout << "value of variable c1 &c2 =" << c1 <<" "<< c2;

return 0;

}

OUTPUT

value of variable c1 &amp;c2 =A  B

1	value of variable c1 &c2 =A B

Float Data Type

Floating point value (example 11.23, 333.3330 etc. ) can be stored in data type float and double. Small floating value can be stored in float and large floating stored in double.

Type	Storage size	Value range	Precision
float	4 byte	1.2E-38 to 3.4E+38	6 decimal places
double	8 byte	2.3E-308 to 1.7E+308	15 decimal places

Example: Declare and initialize float & double variable.

#include <iostream>
using namespace std;
int main()
{
	float x = 10.00;	//  initialize float variable x to 10.00
	float y = 25.23;	//  initialize float variable y to 25.23
	float z = x + y;	// add the values of variable x &y and store in variable z	

	cout << "Sum of x+y = " << z;
	double d = 11.234;	// initialize double variable d to 11.234 
	cout << "\n d= " << d;	// \n is used to move in a new line 
}

#include <iostream>

using namespace std;

int main()

{

float x = 10.00; // initialize float variable x to 10.00

float y = 25.23; // initialize float variable y to 25.23

float z = x + y; // add the values of variable x &y and store in variable z

cout << "Sum of x+y = " << z;

double d = 11.234; // initialize double variable d to 11.234

cout << "\n d= " << d; // \n is used to move in a new line

}

OUTPUT

Sum of x+y = 35.23
 d= 11.234

1 2	Sum of x+y = 35.23 d= 11.234