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Recent questions tagged operator-precedence

0 votes

3 answers

31

precedence in grammer

iita asked in Compiler Design Dec 20, 2016

by iita

533 views

0 votes

1 answer

32

made Easy compiler test q 10
correct answer

Vasu_gate2017 asked in Compiler Design Dec 14, 2016

by Vasu_gate2017

318 views

0 votes

2 answers

33

MADE EASY TEST SERIES
Assume , -, + and / are operators. Precedences and associativity given for those operators as following: 1. has highest precedence among all operators and it is left associative 2. -, + and / are having equal precedence and they are right associative. Using as ... / is Division. The output of the following expression : 10 10 - 5 + 15 - 5 10 / 5 is ________.

User007 asked in Compiler Design Oct 6, 2016

1.2k views

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1 answer

34

Please help in solving this question a veii big doubt

LavTheRawkstar asked in Compiler Design Sep 25, 2016

by LavTheRawkstar

1.3k views

0 votes

0 answers

35

UGC NET CSE | June 2010 | Part 2 | Question: 33
Consider the following left associative operators in decreasing order of precedence : - subtraction (highest precedence) * multiplication $ exponentiation (lowest precedence) What is the result of the following expression ? 3 – 2 * 4 $ | * 2** 3 $-61$ $64$ $512$ $4096$

makhdoom ghaya asked in Programming in C Sep 16, 2016

by makhdoom ghaya

1.4k views

0 votes

2 answers

36

UGC NET CSE | December 2010 | Part 2 | Question: 12
The value of the following expression $(13 / 4 * 3) % 5 + 1$ is $5.75$ $2.95$ $1.4875$ $5$

makhdoom ghaya asked in Programming and DS Sep 5, 2016

by makhdoom ghaya

3.8k views

0 votes

1 answer

37

UGC NET CSE | December 2011 | Part 2 | Question: 36
$X - = Y + 1$ means $X = X – Y + 1$ $X = -X - Y - 1$ $X = -X + Y + 1$ $X= X - Y - 1$

makhdoom ghaya asked in Programming and DS Aug 20, 2016

by makhdoom ghaya

688 views

2 votes

2 answers

38

compilation error
#include<stdio.h> int main(void) { int p=3,q=4,y,z; (p>q?y=5:z=10); printf(" %d %d ",y,z); return 0; } Compile Info prog.c: In function 'main': prog.c:5:15: error: lvalue required as left operand of assignment (p>q?y=5:z=10); ^ z is already a variable ,then why it is saying lvalue required ??

indrajeet asked in Programming in C Jul 20, 2016

430 views

0 votes

2 answers

39

pre/post inc/dec
what is the order of evaluation (by precedence and associativity) int x=7,y=6,z; z=++x + y++ - ++y + x++ - --y + --x + x-- + y--; sorry i give much lengthy expression but my intension is to clear my doubt about the fact: pre/post which one evaluate 1st. scan expression from right to left or left to right. inc/dec which one evaluate first.

Sourabh Kumar asked in Programming in C May 20, 2016

by Sourabh Kumar

518 views

–1 vote

2 answers

40

shivanisrivarshini asked in Compiler Design Jan 31, 2016

by shivanisrivarshini

348 views

1 vote

3 answers

41

operator grammar
Q). Consider the following operator grammar $S \rightarrow BbA\mid bA \mid bBA$ $B \rightarrow b \mid c$ $A \rightarrow a $ Which of the following precedence relation is correct from above grammar? Assume $x<y$ is used to represent $y$ has highest precedence than $x$ and in expression $y$ ... $a <- b$ b). $c < a$ c). Both (a) and (b) d). None of these.

Jhunjhunuwala asked in Compiler Design Jan 28, 2016

by Jhunjhunuwala

3.5k views

19 votes

2 answers

42

TIFR CSE 2012 | Part B | Question: 8
Consider the parse tree Assume that $*$ has higher precedence than $+$, $-$ and operators associate right to left (i.e $(a + b + c= (a + (b + c)))$. Consider $2 + a - b$ $2 + a - b * a + b$ ... The parse tree corresponds to Expression (i) Expression (ii) Expression (iv) only Expression (ii), (iii), and (iv) Expression (iii) and (iv) only

makhdoom ghaya asked in Compiler Design Oct 31, 2015

by makhdoom ghaya

2.7k views

27 votes

6 answers

43

GATE CSE 2000 | Question: 2.21, ISRO2015-24
Given the following expression grammar: $\begin{align} E &\to E * F \mid F + E \mid F \\[1em] F &\to F - F \mid id \end{align}$ Which of the following is true? $*$ has higher precedence than $+$ $-$ has higher precedence than $*$ $+$ and $-$ have same precedence $+$ has higher precedence than $*$

Kathleen asked in Compiler Design Sep 14, 2014

10.7k views

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