C Keywords

• Keywords are the reserved words in C.
• The meaning and working of these keywords are already known to the compiler.
• Each keyword has a specific feature.
• We can not change the meaning of the keyword.
• Keywords are used to perform an internal operation.
• Identifier can be same as keywords.
• Keywords are case-sensitive and always written in small case letter.
• In C Keywords are also called as Reserved words.

There are total 32 keywords in C. The list of these 32 reserved keywords is given below:

Basic use of keyword-

• int, float, char, double, long, short – These are the data types. Each data type has a different meaning.
• if, else, switch, case, default – These are the types of control statements.
• for, while, do – These are the types of loops.
• return –  used for returning a value.
• void – One of the return type.
• auto, extern, const, extern, register, signed, unsigned – These are used to defines variables.
• break, continue – This keyword is used with a loop.
• goto – Used for redirecting the flow of execution.
• enum – It is a data type which contains set of constants.
• sizeof – sizeof keyword is used to know the size.
• struct, typeof –  keywords used in the structure.
• union – It is a collation of variables.

In further posts, you will understand each keyword in detail and also will know how to use.