Recent questions tagged compiler-tokenization

+2 votes

1 answer

1

Lexical Analysis: Self Doubt
The above diagram is Transition Diagrams for identifiers. As we can see that the identifier is said to be accepted if it starts with a letter and ends with a valid delimiter, which includes blank symbol, arithmetic, logical operator, left parenthesis, right ... with a delimiter and + is a valid delimiter and the error in declaration will not be detected at this stage...

asked Jun 9 in Compiler Design by Hirak Active (3.5k points) | 205 views

+1 vote

2 answers

2

token generation doubt
which one of the following string can definitely said to be a token without looking at the next input: +(++,+=) return(return a) *(*=) =(==) ++ , ( ) ‘ ; option e is: plusplus, comma, bracket open, bracket close, single quote ;

asked Jun 5 in Compiler Design by Rhythm (195 points) | 217 views

0 votes

0 answers

3

Compiler design
Q1: Consider G :- $X \rightarrow X + Y | Y$ $Y \rightarrow Y*Z|Z$ $Z \rightarrow (X)$ $Z \rightarrow id$ if LR(1) parser is used to parse the above grammar, then total how many lookahead will be present in the dfa state I0 for the items $X \rightarrow .Y \text{ and } Z \rightarrow .id$ ... ------------------------------------------------------------ Someone verify all these answers.

asked Nov 8, 2018 in Compiler Design by Shubhanshu Boss (18.2k points) | 114 views

+1 vote

2 answers

4

Number of Tokens

asked Nov 7, 2018 in Compiler Design by Na462 Loyal (6.9k points) | 538 views

+1 vote

2 answers

5

Lexical Analysis
How will the compiler detect whether "if" is a keyword or an identifier? Please tell me the concept behind this.

asked Nov 7, 2018 in Compiler Design by Lovejeet Singh (39 points) | 225 views

0 votes

1 answer

6

Fortran statement
The number of tokens in the fortran statements DO 10 I = 1.3 is ?

asked Sep 22, 2018 in Compiler Design by syncronizing Junior (815 points) | 36 views

+1 vote

1 answer

7

Find the no. of tokens
Find no of tokens in below program. #include<stdio.h> main() { int I; int *pi = &I; //parent pointer scanf("%d",pi); printf("%d\n", I+5); }

asked Sep 21, 2018 in Compiler Design by sagar27 (69 points) | 505 views

+1 vote

0 answers

8

Doubt in compiler
Whether a given pattern constitutes a token or not (a) depends on the source language (b) depends on the target language (c) depends on the compiler (d) none of the above comment is true

asked Sep 16, 2018 in Compiler Design by goluabhinan (71 points) | 157 views

+1 vote

1 answer

9

Lexical Error
void main() { int total-value, Num=2,sum=5,var1; 5=Num; var1=2; sum=num*1; if(sum=var1) { sum=sum+1 } } Here, is $\text{"total-value"}$ a lexical error?

asked Mar 20, 2018 in Compiler Design by Jason Active (1.5k points) | 380 views

+2 votes

3 answers

10

Is it always true that operators defined at the same level in the production rule, have same precedence ?

asked Mar 19, 2018 in Compiler Design by radha gogia Loyal (6.3k points) | 121 views

+2 votes

3 answers

11

Number of tokens in int a[5];
Number of tokens in $\text{int a[5];}$

asked Mar 16, 2018 in Compiler Design by Deepak Singh 7 (19 points) | 125 views

+1 vote

0 answers

12

GateForum Number of Tokens
# DEFINE M 100 int main() { // declare variables int n = 2020; return n%M; } The number of tokens in this program?

asked Jan 20, 2018 in Compiler Design by Mk Utkarsh Boss (35.7k points) | 116 views

+4 votes

1 answer

13

Token
How many tokens are there? 1) int a /*b 2) printf ("%

asked Jan 13, 2018 in Compiler Design by srestha Veteran (117k points) | 287 views

+2 votes

2 answers

14

Lexical Analysis
What are different set of characters which are taken as single token in lexical analysis in compiler design? For eg. Charaters under double quotes are taken as single token, post-increment and pre-increment is taken as single token etc.

asked Dec 27, 2017 in Compiler Design by Shubham Kumar Gupta (449 points) | 312 views

+1 vote

1 answer

15

Token
Which of the following not a token of C program? a)1.02e+2 b)#define c)MAX d)123.33

asked Dec 23, 2017 in Compiler Design by srestha Veteran (117k points) | 121 views

+4 votes

4 answers

16

lexical error
if there is miss spelling in some keyword in a program then this misspelled keyword will be treated as lexical errors or it will be treated as a new identifier and accepted as a token ?? ex - whiel (1) ; here while is misspelled as whiel

asked Nov 2, 2017 in Compiler Design by itsvkp1 Junior (797 points) | 730 views

+3 votes

1 answer

17

Compiler Lexical analyzer
int main() { print("%d",a); return 0; } If i execute,i will get error as:- prog.c:112:17: error: 'a' undeclared (first use in this function) printf("%d",a); Now as this is the semantic error,so how does ... lexical analyzer can give the row number and column number of error as it tokenize the entire program but is this also possible in sematic analyzer?

asked Oct 9, 2017 in Compiler Design by rahul sharma 5 Boss (25.3k points) | 287 views

+2 votes

1 answer

18

token count for shorthand operators
How many tokens are there in the following statement: x >> = 2; In general, are shorthand operators counted as a single token as ">>=" or double as ">>" and "=". Or anything else?

asked Oct 2, 2017 in Compiler Design by Rishabh Gupta 2 Boss (17.5k points) | 169 views

+2 votes

1 answer

19

Compilers: Lexical Error
This screenshot is token from the book Ullman, How can following be a lexical error? because "elipseSize" should have a token recorded as an identifier.

asked Sep 26, 2017 in Compiler Design by Manu Thakur Boss (43.8k points) | 543 views

+9 votes

2 answers

20

classification of lexical and syntactic errors in complier phases
I am writing down some errors and its type with a reason.If there something wrong please correct it with a valid reason. 1.fi(a==10) this is not a lexical error, because lexical analyzer cannot tell whether fi is a misspelling ... token. but this says it is streams of valid tokens 6.int d=10.10.10 lexical error as invalid num token.

asked Aug 14, 2017 in Compiler Design by reena_kandari Loyal (8.1k points) | 1k views

+1 vote

4 answers

21

Compilers Principles Techniques and Tool Ch-3 Lexical Analysis
What will be the tokens formed for ',' and '{' ?

asked Mar 26, 2017 in Compiler Design by tanyagt99 (11 points) | 497 views

+4 votes

2 answers

22

Type of error
Find the type of error produced by the following C code. main() { in/*comment t x; floa/*comment*/t gate; } Lexical error syntax error both a) and b) None of these

asked Feb 7, 2017 in Compiler Design by Ashwani Kumar 2 Boss (15.6k points) | 710 views

+3 votes

1 answer

23

MadeEasy Subject Test: Compiler Design - Lexical Analysis
Is the given answer correct?

asked Jan 6, 2017 in Compiler Design by Lucky sunda Active (4.5k points) | 176 views

+12 votes

2 answers

24

Tokenization in lexical analysis
Consider the following C program: int main (void) { in/*this is an example*/z; double/*is it an error?*/y; print( “This is simple” ); return 0; } - How many Different tokens are there in the above code.

asked Dec 13, 2016 in Compiler Design by dd Veteran (57k points) | 1.2k views

0 votes

1 answer

25

tokens_compiler
Consider the following C program: How many different tokens are there for the same program

asked Sep 28, 2016 in Compiler Design by Rohan Mundhey Active (2.7k points) | 229 views

0 votes

1 answer

26

Question on SDTS
Given explanation Couldn't understand the explanation. Please explain

asked Jan 22, 2016 in Compiler Design by shikharV Active (3.5k points) | 144 views

+2 votes

3 answers

27

TestBook Test Series: Compiler Design - Lexical Analysis
I think answer should be 13. We got 13 tokens printf ( "string" ++ & & * * * a ) ;

asked Jan 19, 2016 in Compiler Design by Akash Kanase Boss (41.5k points) | 397 views

+4 votes

3 answers

28

Calculating number of tokens
Given solution: Please explain how the number of tokens are 11.

asked Jan 19, 2016 in Compiler Design by shikharV Active (3.5k points) | 4.8k views

+1 vote

1 answer

29

ace test series
what lexical analysis phase use. regular expression , regular grammar , ??

asked Jan 12, 2016 in Compiler Design by Tendua Boss (16k points) | 228 views

+1 vote

1 answer

30

How is escape sequence tokenised in c compiler.
How tokens are assigned for a string having escape sequence in C lexical phase Eg.. printf ("this\" is a string\""); and what for printf ("this is""a string");

asked Oct 16, 2015 in Programming by admin Active (2.4k points) | 263 views

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