Lex program to count number of comments (single line or multiple lines) in given C source file

%{ 

  #include<stdio.h>

  int count,cont;

%}           

%%

"//" count++;

"/*"([^*]|[*][^/])*"*/" {cont++;}

.

\n

%%

int main()

{

  FILE *fp;

  fp=fopen("test.c","r");

  if(fp==NULL)

  {

       printf("File cant oprn");

       return 0;

  }

  yyin=fp;

  yylex();

  printf("single line comments is=%d",count);

  printf("\nMultiple line commentis=%d",cont);

}

ScreenShot: