C Flow Control
Data Types in C Language With Example
Data types defines the type and size of data, which a variable can store. In this tutorial, we will learn about different-different data types and their usage in C Language.
C language provides different-different data types. Each data type has different memory requirements and specific operations that can be done on it. Each variable in C has an associated data type, which user have to define while declaring the variable.
There are four primary data types in C, which are int, char, float and double.
|Data Type||Format Specifier||Size||Capacity|
|char||%c||1 bytes||-128 to +127|
|unsigned char||%c||1 bytes||0 to 255|
|short||%d||2 bytes||-32768 to +32767|
|unsigned short||%d||2 bytes||0 to 65535|
|int||%d or %i||2 bytes||-32768 to +32767|
|unsigned int||%u||2 bytes||0 to 65535|
|long||%ld||4 bytes||-2147483648 to +2147483647|
|unsigned long||%lu||4 bytes||0 to 4294967295|
|float||%f||4 bytes||3.4e-38 to 3.4e+38|
|double||%lf||8 bytes||-1.7e-308 to +1.7e+308|
|long double||%lf||10 bytes||-1.7e-4932 to +1.7e+4932|
1. Int Data Type:
Integers are whole numbers that can be zero, positive, or negative, but do not have decimal values. For example: 0 , 1 , -1
In order to declare an integer variable, we can use int.
In this case, age is an integer variable.
In C programming, we can declare multiple variables at once. For example,
int id , age;
2. Char Data Type:
A char data type variable can only store one character. The char has a storage capacity of 1. It is the most basic data type in C. It stores a single character and requires a single byte of memory in almost all compilers.
char ch = 'A';
3. Float Data Type:
The float data type is used to hold floating-point values in C programming. Decimal and exponential numbers are stored in C using the float keyword. It is used to hold decimal integers with single precision (numbers with floating point values). For example: 7.05 , 10.025 , 5.008
float salary; float num = 2.5f;
4. Double Data Type:
In C, a double data type is used to hold decimal numbers with double precision (numbers with floating point values). It is used to define numeric values in C that contain numbers with decimal values. Double data type is essentially a precise data type that can carry 64 bits of decimal integers or floating points.
Since a double data type variable has high accuracy than a float, it is obvious that it takes up twice as much memory as the floating-point type. It may easily fit 16 to 17 digits after or before a decimal point.
double price; double num = 12.293123;