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Questions and Answers
Which of the following is a characteristic of C language keywords?
What is the main difference between keywords and identifiers in C language?
Which of the following is a valid C language keyword?
Which of the following is a valid identifier in C language?
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What is the main characteristic of identifiers in C language?
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Which of the following is a valid identifier in C language?
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What is the purpose of reserved words (keywords) in C language?
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Which of the following is a characteristic of identifiers in C language?
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How many reserved words (keywords) are there in the C language?
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Study Notes
C Language Keywords
- Keywords are predefined words in C language that have a specific meaning and purpose.
- They are always written in lowercase letters and are reserved, meaning they cannot be used as variable names.
Keywords vs Identifiers
- The main difference between keywords and identifiers is that keywords are predefined and have a specific meaning, while identifiers are user-defined names given to variables, functions, and labels.
- Keywords are used to perform specific operations or functions, whereas identifiers are used to identify variables, functions, and labels.
Valid Keywords and Identifiers
-
intis a valid C language keyword. -
myVariableis a valid identifier in C language.
Characteristics of Identifiers
- Identifiers can contain letters, digits, and underscores, but must start with a letter or underscore.
- Identifiers are case-sensitive, meaning
myVariableandMyVariableare treated as different names.
Purpose of Reserved Words (Keywords)
- The purpose of reserved words (keywords) is to define the structure and syntax of the C language program.
- They are used to declare variables, define functions, and specify control structures, among other things.
Number of Reserved Words (Keywords)
- There are 32 reserved words (keywords) in the C language.
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Description
Test your knowledge of C language keywords and identifiers with this quiz. Identify reserved words and user-defined names and demonstrate your understanding of their usage in programming.
