Computer-Networks
October 7, 20232012 June UGC NET Paper 1
October 7, 2023Run-Time-Environment
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Question 1
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Consider the following statements.
- I. Symbol table is accessed only during lexical analysis and syntax analysis.
II. Compilers for programming languages that support recursion necessarily need heap storage for memory allocation in the run-time environment.
III. Errors violating the condition ‘any variable must be declared before its use’ are detected during syntax analysis.
Which of the above statements is/are TRUE?
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II only
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I only
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I and III only
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None of I, II and III
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Question 1 Explanation:
I is wrong as Symbol table is also accessed during semantic analysis phase.
II is wrong as compilers which supports recursion require stack memory in run time environment.
III is wrong “any variable must be declared before its use” is a semantic error and not syntax error.
II is wrong as compilers which supports recursion require stack memory in run time environment.
III is wrong “any variable must be declared before its use” is a semantic error and not syntax error.
Correct Answer: D
Question 1 Explanation:
I is wrong as Symbol table is also accessed during semantic analysis phase.
II is wrong as compilers which supports recursion require stack memory in run time environment.
III is wrong “any variable must be declared before its use” is a semantic error and not syntax error.
II is wrong as compilers which supports recursion require stack memory in run time environment.
III is wrong “any variable must be declared before its use” is a semantic error and not syntax error.
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