Question

Write a java program lex specification to implement lexical analysis phase of compiler to count number of words,lines and characters of given input file

Answer 1

ANSWER
..........




int ch=0, bl=0, ln=0, wr=0;




%}




%%




[\n] {ln++;wr++;


}

[\t] {bl++;wr++;


}

[" "] {bl++;wr++;}

[^\n\t] {ch++;}

%%

int main()

{

FILE *fp;

char file[10];

printf("Enter the filename: ");

scanf("%s", file);

yyin=fp;

yylex();

printf

( "Character=%d\nBlank=%d\nLines



=%d\nWords=%d", ch, bl, ln, wr);

return 0;





}












Output ->





$cat > input


Girish rao salanke


$lex p1a.l



$cc lex.yy.c –ll




$./a.out



Enter the filename: input



Character=16


Blank=2


Lines=1


Word=3