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SYSTEM SOFTWARE AND OPERATING SYSTEM LABORATORY

[As per Choice Based Credit System (CBCS) scheme]

(Effective from the academic year 2017 - 2018)

SEMESTER - VI

Subject Code 17CSL67

IA Marks 40

Number of Lecture Hours/Week 01I + 02P

Exam Marks 60



17CSL67 - SYSTEM SOFTWARE AND OPERATING SYSTEM LABORATORY

Program 2

Develop, Implement and Execute a program using YACC tool to recognize all strings ending with b preceded by na's using the grammar anb (note: input n value)



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Download the Program - code
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Lex Program

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%{
#include "y.tab.h"
%}
%%
a 		{return A;}
b 		{return B;}
[\n]	return '\n';
%%

Yacc Program

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%{
#include<stdio.h>
#include<stdlib.h>
%}
%token A B
%%
input:	s'\n' {printf("Successful Grammar\n");exit(0);}
		s: A s1 B| B
		s1: ; | A s1
%%
main()
{
	printf("\nEnter A String\n");
	yyparse();
}
int yyerror()
{
	printf("\nError \n");
	exit(0);
}

Output


Program Output

× Note Page Number is specified to navigate between Pages...
SYS = Syllabus
P = Program

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