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Recent questions tagged lexical-analysis

1 votes
2 answers
61
compiler
consider this c code: wheil(1){ printf("hi"); } will this code fragment gives lexical error or not. If not then who is responsible for this error.
consider this c code:wheil(1){ printf("hi"); }will this code fragment gives lexical error or not. If not then who is responsible for this error.
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1 votes
1 answer
64
cd lexical analysis token
1. macros are not considered as tokens in tokenizing. 2.#include considered as single token 2.stdio.h considered as single token. Are the above statements true?
1. macros are not considered as tokens in tokenizing.2.#include considered as single token2.stdio.h considered as single token. Are the above statements true?
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12 votes
5 answers
65
Lexical, Syntax and Semantic error
int main() { int 1a, b; Printf("\nGate 2018"); Printf("%d",x); } How many types of error are there in this code?
int main() { int 1a, b; Printf("\nGate 2018"); Printf("%d",x); }How many types of error are there in this code?
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3 votes
0 answers
66
Compiler Doubt
what type of error is caused if function name is same as a keyword name?
what type of error is caused if function name is same as a keyword name?
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6 votes
1 answer
67
Lexical error or No of tokens
Is this line a/*b successfully generating the token's or it give lexical error ? if it is given the lexical error then why so ? I think it will give lexical error because we don't find */ here
Is this line a/*b successfully generating the token's or it give lexical error ? if it is given the lexical error then why so ?I think it will give lexical error because...
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1 votes
2 answers
68
number of tokens
1) 8 2) 9 3) 12 4) 10
1) 82) 93) 124) 10
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1 votes
1 answer
71
#CD Doubt
What is the diffrence between Lexical error , Syntax error and semantic error..? Please explain with this example void main() { int total-value, Num=2,sum=5,var1; 5=Num; var1=2; sum=num*1; if(sum=var1) { sum=sum+1 } }
What is the diffrence between Lexical error , Syntax error and semantic error..?Please explain with this examplevoid main(){int total-value, Num=2,sum=5,var1;5=Num;var1=2...
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1 votes
1 answer
72
MadeEasy Subject Test: Compiler Design - Lexical Analysis
in c programming which of the following is not used as a token seprator during lexical analysis? a)white space b)comment c)semicolon d)none of these token seprator means??
in c programming which of the following is not used as a token seprator during lexical analysis?a)white spaceb)commentc)semicolond)none of thesetoken seprator means??
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7 votes
4 answers
73
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
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 accept...
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9 votes
2 answers
75
# Error
Q) For each of the following C statements state whether they contain lexical error, syntax error, semantic error or no error(along with reason) - i) inta radius =5; ii) x=127b + z; iii) printf("%d=%d\n", x); iv) int p[10]; x=25 + p;
Q) For each of the following C statements state whether they contain lexical error, syntax error, semantic error or no error(along with reason) -i) inta radius =5;ii) x=1...
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5 votes
1 answer
77
#Lexical_Analysis
Marcos & prepocessor directive (#define, #include) are handle by which phase of compiler ?? Or it is not input to compiler,it is alredy handled in preprocessor??? Please explain in detail..
Marcos & prepocessor directive (#define, #include) are handle by which phase of compiler ?? Or it is not input to compiler,it is alredy handled in preprocessor???Please e...
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3 votes
1 answer
80
self doubt
How are constants recogonized by the lexical analyser like interger 1234 floating point 1234.56789 and what happens when we have -1234 and -1234.56789 how many tokens are generated in this case(each of this case) ? is "-" considered seperately ?
How are constants recogonized by the lexical analyser like interger 1234 floating point 1234.56789and what happens when we have -1234 and -1234.56789 how many token...
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10 votes
3 answers
81
Lexical analyser, Tokens
When do we count ++(post increment or pre increment) as 1 or 2 token ?
When do we count ++(post increment or pre increment) as 1 or 2 token ?
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2 votes
1 answer
82
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.
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.
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3 votes
1 answer
83
Compiler Design
The action of parsing the source program into the proper syntactic classes is known as 1. Lexical Analysis 2. Syntax Analysis 3. Interpretation Analysis 4. Parsing
The action of parsing the source program into the proper syntactic classes is known as1. Lexical Analysis2. Syntax Analysis3. Interpretation Analysis4. Parsing
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9 votes
2 answers
84
general doubt
MISSPELLING OF KEYWORDS CAUSE WHICH TYPE OF ERROR- SYNTAX ERROR OR LEXICAL ERROR?? printf("%d") without any integer argument will cause which type of error??
MISSPELLING OF KEYWORDS CAUSE WHICH TYPE OF ERROR- SYNTAX ERROR OR LEXICAL ERROR??printf("%d") without any integer argument will cause which type of error??
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1 votes
1 answer
86
Compiler Design
Which language is used to describe the semantics and syntax of c? 1. attribute grammar. 2 syntax tree 3. none
Which language is used to describe the semantics and syntax of c?1. attribute grammar.2 syntax tree3. none
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5 votes
1 answer
87
Test by Bikram | Mock GATE | Test 4 | Question: 43
Consider the $C$ program given below: #include <stdio.h> main () { printf("This is GO mock exam\n" ); } The total number of tokens generated when this program is passed to lexical analyzer is :______.
Consider the $C$ program given below:#include <stdio.h main () { printf("This is GO mock exam\n" ); }The total number of tokens generated when this program is passed to l...
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14 votes
4 answers
88
ISRO 2017-79
The output of a lexical analyzer is A parse tree Intermediate code Machine code A stream of tokens
The output of a lexical analyzer isA parse treeIntermediate codeMachine codeA stream of tokens
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2 votes
2 answers
90
Lexical Analysis
printf("Hello); In the statement given above,is there any lexical error or not ?
printf("Hello);In the statement given above,is there any lexical error or not ?
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