Data types in C
In C programming language, data types specify the type of data to be declared in the C program. In which the created program in C programming stores variable values. Each C programming data type has various specific features. Such as the size of the data type used as a variable and the range of their default storage values. Here are some default data types in C language. Which includes integer, float, char, double, long double data type etc.
Default Data Type in C Programming.
- Character – Data type (1 byte) is used to store text value.
- int – Integer data type (usually 2 or 4 bytes) is used to store integer decimal values.
- Small – Small integer data type (usually 2 bytes) is the storage value.
- Long – Long integer data type (usually 4 bytes) is the storage value.
- Long data type – Very long integer (usually 8 bytes) is the default variable storage. Floating-point data type.
- Float – Single-precision floating-point number (usually 4 bytes) is the default variable storage.
- Double data type – Double-precision floating-point number (usually 8 bytes) is the variable storage value.
- Long double data type – Extended precision floating-point number (size varies).
- Void data type – Indicates the absence of zero storage value. Used in array or C programming function programs. Which do not return any type of program data value at the end of program execution,
Derived data type.
- Array – As C language generic pointer data type, In derived C language data type, Array – A collection of homogenous similar program data variable elements in C programming language.
- C Pointers – In C program, pointer variables are variables that store memory addresses of any declared data type.
- C Structure – In C language, there are structured user-defined data types. Which group different structure program data variable value types of data in a single format.
- Union – In C language, union data type is similar to structure data type. But in union, the declared data types share the same memory space.
- Enumeration – Enumeration is also a user defined C language data type. Which stores different data type values named user-defined data type values.
C Language Modifiers.
- Signed – Represents positive and negative integer storage in C language program.
- Unsigned – Represents non-negative numbers values in C language program.
- Short – Stores short data type in C language program.
- Long – Stores long data type value in C language program.
Variable declaration in c.
char text = ‘T’;
int number = 9;
float temp = 98.6;
double pi_value = 3.14159;
void *ptr1 = NULL;
Size and Range.
In C language the size and range of declared types may vary depending on the program compiler and architecture. If you want to know the size of C program data type in bytes then you can find the default variable data storage value using sizeof() operator.
Choosing different data types in C language based on the requirement.
- Always use int data format for integer data type unless there are specific programming project size requirements.
- If you want float number data type for higher precision then you can use double data type for floating-point numbers.
- For single character use char character data type.
- Always keep in mind the memory usage and range requirements of the data type variable while choosing data types in C language.
