LinuxQuestions.org - [SOLVED] Im getting following errors while compiling my LEX program

- Linux - Newbie (https://www.linuxquestions.org/questions/linux-newbie-8/)

- - Im getting following errors while compiling my LEX program (https://www.linuxquestions.org/questions/linux-newbie-8/im-getting-following-errors-while-compiling-my-lex-program-4175427997/)

Im getting following errors while compiling my LEX program

There are the errors I'm getting:

Quote:

editted.l: In function ‘main’:
editted.l:39:4: warning: passing argument 1 of ‘fprintf’ from incompatible pointer type [enabled by default]/usr/include/stdio.h:355:12: note: expected ‘struct FILE * __restrict__’ but argument is of type ‘char *’
editted.l: In function ‘yywrap’:
editted.l:65:12: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘:’ token
editted.l:65:12: error: expected expression before ‘:’ token

My code is as follows:

Code:

%{

        unsigned long charCount = 0, wordCount = 0, lineCount = 0;

        #undef yywrap

%}



word [^ \t\n]+

eol \n



%%

{word} { wordCount++; charCount += yyleng; }

{eol} { charCount++; lineCount++; }

.        charCount++;

%%





char **fileList;

unsigned currentFile = 0;

unsigned nFiles;

unsigned long totalCC = 0;

unsigned long totalWC = 0;

unsigned long totalLC = 0;



main(argc, argv)

int argc;

char **argv;

{

        FILE *file;



        fileList= argv+1;

        nFiles=argc-1;



        if (argc == 2) 

        {

                currentFile = 1;

                file = fopen(argv[1], "r") ;

                if (!file) 

                {

                        fprintf ("stderr,*could not open %s\n",argv[1]);

                        exit(1);

                }

                yyin=file;

        }



        if (argc > 2)

                yywrap(); /* open first file */



        yylex();

        

        if (argc > 2) 

        {

                printf("%8lu %8lu %8lu %s\n", lineCount, wordCount, charCount, fileList [currentFile-1]);

                totalCC += charCount;

                totalWC += wordCount;

                totalLC += lineCount;

                printf("%8lu %8lu %8lu total\n",totalLC, totalWC, totalCC);

        }

        else

                printf("%8lu %8lu %8lu\n",lineCount,wordCount, charCount );

        return 0;

}



yywrap()

{

        FILE *file:

        if ( (currentFile ! = 0) && (nFiles > 1) && (currentFile < nFiles) )

        {

                printf("%8lu %8lu %8lu %s\n", lineCount, wordCount, charCount, fileList[CurrentFile-1]);

                totalCC += charCount;

                totalWC += wordCount;

                totalLC += lineCount;

                charCount = wordcount = lineCount = 0;

                fclose (yyin) ; /* done with that file */

        }



        while (fileList[currentFile] != (char *)0) 

        {

                file = fopen(fileList[currentFile++], "r");

                if (file != NULL) 

                {

                        yyin = file;

                        break;

                }

                fprintf ( stderr ,"could open %s\n", fileList[currentFile-1]);

        }

        return (file ? 0 : 1);

}

I don't know lex, but from C++ I'm guessing you need to write

Code:

fprintf (file,"stderr,*could not open %s\n",argv[1]);

and in the first line of yywrap change the ':' at the end of the line to a ';'

I've never compiled from source before but I did find some good instructions to learn how to.

If you ever need to re-compile a program you should do a <make clean> or (make dist clean)
This will delete files created during the previous compile and give you a clean tree.

The instructions also said:
If you encounter problems from source the error should clearly state what you are missing or why it is failing.

I found the instructions under "Tutorials" at the main page of linuxquestions written by Jeremy titled
Compiling Programs From Source
http://www.linuxquestions.org/linux/...ms_from_Source

Hope this helps

Quote:

Originally Posted by Snark1994 (Post 4784965)

I don't know lex, but from C++ I'm guessing you need to write

Code:

fprintf (file,"stderr,*could not open %s\n",argv[1]);

and in the first line of yywrap change the ':' at the end of the line to a ';'

Thank you very much for your help. I have successfully edited my code.

Well done :) please mark the thread as 'SOLVED' (there should be a link at the top of the page)

Thanks,