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- Question
Which of the following sentences are correct about a switch loop in a C program?
1: switch is useful when we wish to check the value of variable against a particular set of values. 2: switch is useful when we wish to check whether a value falls in different ranges. 3: Compiler implements a jump table for cases used in switch. 4: It is not necessary to use a break in every switch statement.
Options- A. 1,2
- B. 1,3,4
- C. 2,4
- D. 2
- Correct Answer
- 1,3,4
- 1. By default structure variable will be of auto storage class
Options- A. Yes
- B. No Discuss
- 2. Bitwise can be used to reverse a sign of a number.
Options- A. Yes
- B. No Discuss
- 3. Is it necessary that in a function which accepts variable argument list there should be at least be one fixed argument?
Options- A. Yes
- B. No Discuss
- 4. Bitwise can be used to generate a random number.
Options- A. Yes
- B. No Discuss
- 5. A function that receives variable number of arguments should use va_arg() to extract the last argument from the variable argument list.
Options- A. True
- B. False Discuss
- 6. Bitwise & can be used to check if more than one bit in a number is on.
Options- A. True
- B. False Discuss
- 7. The preprocessor can trap simple errors like missing declarations, nested comments or mismatch of braces.
Options- A. True
- B. False Discuss
- 8. It is necessary that a header files should have a .h extension?
Options- A. Yes
- B. No Discuss
- 9. Bitwise | can be used to set multiple bits in number.
Options- A. Yes
- B. No Discuss
- 10. Bitwise & can be used to check if a bit in number is set or not.
Options- A. True
- B. False Discuss
More questions
Correct Answer: Yes
Correct Answer: No
Correct Answer: Yes
Correct Answer: No
Correct Answer: False
Correct Answer: True
Correct Answer: False
Explanation:
False, the preprocessor cannot trap the errors, it only replaces the macro with the given expression. But the compiler will detect errors.
Correct Answer: No
Explanation:
No, the header files have any kind of extension.
Correct Answer: Yes
Correct Answer: True
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Complicated DeclarationsConstantsDeclarations and InitializationsExpressionsFloating Point IssuesInput / OutputLibrary FunctionsPointersStringsArraysBitwise OperatorsC PreprocessorCommand Line ArgumentsControl InstructionsFunctionsMemory AllocationStructures, Unions, EnumsVariable Number of ArgumentsProgramming
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