Prashant | Sun, 07 Jun, 2020 | 145
In C, we have 32 keywords, which have their predefined meaning and cannot be used as a variable name. These words are also known as “reserved words”. It is good practice to avoid using these keywords as variable name. These are -
| auto | break | case | char |
| const | continue | default | do |
| double | else | enum | extern |
| float | for | goto | if |
| int | long | register | return |
| short | signed | sizeof | static |
| struct | switch | typedef | union |
| unsigned | void | volatile | while |
:
int, float, char, double, long – These are the data types and used during variable declaration.
break – Used with any loop OR switch case.if, else, switch, case, default – Used for decision control programming structure.
for, while, do – types of loop structures in C.
void – One of the return type.
goto – Used for redirecting the flow of execution.
auto, signed, const, extern, register, unsigned – defines a variable.
return – This keyword is used for returning a value.
continue – It is generally used with for, while and dowhile loops, when compiler encounters this statement it performs the next iteration of the loop, skipping rest of the statements of current iteration.
enum – Set of constants.
sizeof – It is used to know the size.
struct, typedef – Both of these keywords used in structures (Grouping of data types in a single record).
union – It is a collection of variables, which shares the same memory location and memory storage.
1. Introduction And Getting Started With C
3. Why We Should Use C Language
4. Applications Of C Programming
5. Basic Rules For Writting C Program
8. Tokens In C
9. Difference Between Int Main And Void Main
11. Variables In C
13. Difference Between Local And Global Variable
14. Difference Bwtween Auto / Extern / Static Variable
15. Constant In C
16. How To Access Global Variable Using Extern Keyword In C
17. Exit And Return Staterment In C
18. Print Float Value Upto N Decimals In C Programming
19. How To Print Multiline Message Using Single Printf In C Programming ?
20. What Value Returned By Scanf Function In C Language ?
21. What Value Is Returned By Printf And Scanf In C