C Language
Data Types | Keywords or Reserved words | Format Specifiers | Character Constant
C Language
C Basic
C Statements
C Loops
C Array
C String
C Functions
C Structures and Unions
Pointers
Files I/O
C Data Types / Keywords :
Data Types :
Basic Data Types :
| Data Types | Occupied in RAM | char int float double |
1byte 2bytes 4bytes 8bytes |
|---|
Additional Data Types :
| Data Types | Occupied in RAM | unsigned char short int unsigned short int unsigned int long int unsigned long int long double |
1byte 1byte 1byte 2bytes 4bytes 4bytes 10bytes |
|---|
Format Specifiers :
| Data Type | Format | Meaning |
|---|---|---|
|
%d %u %o %x |
Respects a decimal integer value. Respects an unsigned integer value. Respect an unsigned octal value. Respect an unsigned hexadecimal value. |
|
%f %e |
Represents a floating point value. A floating point value in decimal or exponential form. |
| %c %s | Represents a single character value. Represents a strings of value of characters. |
Note : %hd, %ld, %lf are used for short int, long int and long double respectively.
Keywords Or Reserved Words :
- auto
- default
- float
- register
- struct
- volatile
- break
- do
- for
- return
- switch
- while
- case
- double
- goto
- short
- typedef
- char
- else
- if
- signed
- union
- const
- enum
- int
- sizeof
- unsigned
- continue
- extern
- long
- static
- void
Character Constant :
| Character Constant | Meaning |
|---|---|
| \n | Move to new line |
| \r | Carriage return (Enter) |
| \t | Horizontal tab |
| \v | Vertical tab |
| \\ | Print back slash |
| \? | Print qustion mark |
| \' | print singel quote |
| \" | print double quote |
| \0 | Null character |