Data type and its uses in C Programming | CoderGuy

Hello, friends, this is Ujjwal Sinha, in today’s article I will discuss about Data type and its use in C language. So without wasting time let’s begin…

Data type:

C language is rich in its data type. The variety of datatype available in C allows the programmer to select the appropriate type according to the need of the application. ANSIC supports four classes of datatypes.

Data type and its uses in C

Primary/ fundamental Datatype:

The data type which represents the fundamental data i.e. characters and numbers and are already defined to the compiler is known as the primary data type. Integers, Characters and float are primary data types in C language. Some of these data types are further divided into different categories like signed, unsigned, short, long etc. The following chart represents the classification of basic datatype and their size. Symbol and range.

Type	Size (byte)	Symbol	Range
Char/signed char	1	%c	-128 to 127
Unsigned char	1	%c	0 to 255
Short int/signed short int	1	%hd	-128 to 127
Unsigned short int	1	%h	0 to 255
Int / signed int	2	%d	-32768 to 32767
Unsigned int	2	%u	0 to 65535
Long int/ signed long int	4	%ld	-2,147,483,648 to 2,147,483,647
Unsigned long int	4	%lu	0 t0 4,294,967,295
Float	4	%f	-3.4e38 to 3.4e38
Double	8	%lf	-3.4e308 to 3.4e308
Long double	10	%Lf	-1.7e4982 to 1.7e4982

Derived datatype:

The datatypes which are derived from primary data types are called derived datatype, array, pointer, structure, union, etc. are derived datatype.
EX.

int a[10];

int *ptr;

struct mixed

{

int x;

char y;

float z;

}

v1, v2;

User-Defined Datatype: 

there are two ways to create user-defined datatype-

Using typedef statement – C supports a feature known as type definition that allows a user to define a new name to represent an existing primary or derived datatype.

SYNTAX: typedef datatype name;
Example:

1. typedef int integer;
2. typedef unsigned long int uh;
3. Using enum statement- In addition to typedef statement C allows another user-defined datatype enumerated datatype which can be created using the enum keyword

SYNTAX: enum datatype_name {value 1,value 2,value 3,…….value n};
Example:

1. enum days {Sunday, Monday, Tuesday, Thursday, Friday, Saturday};
2. enum days holiday= Sunday;
3. enum months { January , February,………………..,December};
4. enum months summer= June;

Empty Data set: void null,\0 are three members of the empty data set.

Operators

In the previous article, some instructions about operators and in this article we learn about types of operators use in C language.

TYPES OF OPERATORS:

C supports the number of operators that can be classified into various categories based on their utility and actions. There are eight categories of operators which are the following:

1. Arithmetic operators.
2. Relational Operators.
3. Logical Operators.
4. Increment and decrement operators.
5. Assignment Operators.
6. Conditional Operators.
7. Bitwise operators.
8. Special Operators.

Some C programming related arithmetic operators.

Write a program in C language to input three numbers and print sum and average.

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,c,sum=0 ;

float avg=0 ;

clrscr();

printf(“Enter first number”);

scanf(“%d”,&a);

printf(“Enter second number”);

scanf(“%d”,&b);

printf(“Enter third number”);

scanf(“%d”,&c);

sum=a+b+c;

avg=sum/3;

printf(“Sum=%d”,sum);

printf(“Average=%f”,avg);

}

getch();

Write a program in C to input two numbers and print its subtraction.

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,sub=0 ;

clrscr();

printf(“Enter first number”);

scanf(“%d”,&a);

printf(“Enter second number”);

scanf(“%d”,&b);

sub=a-b;

printf(“Subtraction=%d”,sub);

}

getch();

Write a program in C input two numbers and print multiplication.

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,multiply=0 ;

clrscr();

printf(“Enter first number”);

scanf(“%d”,&a);

printf(“Enter second number”);

scanf(“%d”,&b);

multiply=a*b;

printf(“Multiplication=%d”,multiply);

}

getch();

Write a program In C input two numbers and print its division and reminder.

#include<stdio.h>

#include<conio.h>

void main()

{

 int a,b,div,rem=0 ;

 clrscr();

 printf(“Enter first number”);

 scanf(“%d”,&a);

 printf(“Enter second number”);

 scanf(“%d”,&b);

        div=a/b;

        rem=a%b;

        printf(“Division=%d”,div);

        printf(“Reminder=%d”,rem);

}


getch();