Disk-scheduling
October 8, 2023NIC-NIELIT STA 2020
October 8, 2023GATE 2000
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Question 44
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Given the following expression grammar:
E → E * F | F + E | F
F → F - F | id
which of the following is true?
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* has higher precedence than +
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– has higher precedence than *
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+ and – have same precedence
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+ has higher precedence than *
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Question 44 Explanation:
The operator which is in low level that can have high preference.
Order of precedence is *, +, -.
Here * and + have equal preference, ‘-‘ can have higher precedence than + and *.
Order of precedence is *, +, -.
Here * and + have equal preference, ‘-‘ can have higher precedence than + and *.
Correct Answer: B
Question 44 Explanation:
The operator which is in low level that can have high preference.
Order of precedence is *, +, -.
Here * and + have equal preference, ‘-‘ can have higher precedence than + and *.
Order of precedence is *, +, -.
Here * and + have equal preference, ‘-‘ can have higher precedence than + and *.