07-05-2011, 12:53 PM
Objective
Program in “LEX” to count number of Identifiers and Keywords.
digit[0-9]
letter[A-Za-z]
Code:
%{
int count1=0;
int count2=0;
%}
%%
intI
floatI
char {count++;printf("%s is keyword",yytext);}
{letter}I({letter}I{digit})*{count2++;}
[a-zA-Z]+ {printf("%s is not keyword",yytext);}
.I\n {ECHO;}
%%
main()
{
yylex();
printf("%d no of keyword %d no of id",count1,count2);
}