Free Test Character set, keyword... – C Language

Q1: Which of the following is a valid C identifier?

A. int B. myVariable C. return D. 123abc

Q2: Which character is NOT part of the C character set?

A. Letters B. Digits C. Emojis D. Special symbols

Q3: In C, keywords are?

A. User-defined names B. Predefined reserved words C. Special symbols D. Operators

Q4: Which of these is NOT a keyword in C?

A. float B. volatile C. function D. struct

Q5: What is the maximum length of an identifier in C (standard C99)?

A. 31 characters B. 63 characters C. 255 characters D. No limit

Q6: Which of the following can be used in an identifier?

A. Space B. Underscore C. Hyphen D. Comma

Q7: Which keyword is used to define a constant in C?

A. final B. define C. const D. static

Q8: In C, identifiers are case-sensitive. Which of these is TRUE?

A. sum and Sum are same B. sum and Sum are different C. Keywords are case-sensitive D. Both B and C

Q9: Which of these is NOT a valid identifier?

A. _value B. total1 C. 1total D. value_total

Q10: How many keywords are in C90 standard?

A. 32 B. 48 C. 64 D. 28

Q11: Which of these is a keyword in C?

A. repeat B. auto C. loop D. integer

Q12: Which character is used to separate multiple statements in C?

A. Comma B. Semicolon C. Colon D. Space

Q13: Which keyword is used for defining a new data type name?

A. define B. typedef C. struct D. enum

Q14: Which of these is a valid keyword in C?

A. main B. switch C. function D. string

Q15: Identifiers in C can contain?

A. Letters, digits, underscores B. Letters only C. Digits only D. Special characters

Q16: Which of these is NOT allowed in an identifier name?

A. Letter B. Digit C. Underscore D. Space

Q17: Which keyword is used to declare an enumeration?

A. enum B. enumerate C. enums D. enumtype

Q18: In C, identifiers must start with?

A. Digit B. Special symbol C. Letter or underscore D. Number sign

Q19: Which of these is NOT a valid keyword in C?

A. volatile B. extern C. register D. package

Q20: Which keyword is used to define a variable that retains its value between function calls?

A. const B. register C. static D. auto

Quiz for Character set, keywords, identifiers