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Character set is a collection of characters that can be used to write a program of particular language. Every language having their own set of characters.
Character set of C consist of letters, digits, white spaces and special symbols.
Following is the list of C character set:
| Category |
Characters |
| Letters |
A-Z, a-z |
| Digits |
0-9 |
| White Spaces |
Blank Space, Tab, New Line, Form Feed, Carriage Return |
| Special Symbols |
# + - * / % & | ~ ! , . : ; $ ^ [ ] { }
( ) < > = _ \ “ ‘ ? |
Every C program can be written using above character set. |
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Keywords are predefined words.
The meaning of all the keywords is already defined by the developer of C Language.
The programmer can not change the meaning of keywords.
Keywords are also known as reserved words. So they can not be used as a name of variable, constant, array, function, structure etc…
In C language there are 32 keywords available. Which are given below:
| auto |
double |
int |
struct |
| break |
else |
long |
switch |
| case |
enum |
register |
typedef |
| char |
extern |
return |
union |
| const |
flaot |
short |
unsigned |
| continue |
for |
signed |
volatile |
| default |
goto |
sizeof |
void |
| do |
If |
static |
while |
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