Homework & Coursework Questions

%{
#include <stdio.h>
#include <string.h>
    const char* id[1000];
    void insertId(char*, int);
    int i = 0;
    int newLineCnt = 1;
%}

%%
auto;
break;
case;
char;
continue;
default;
do;
double;
else;
extern;
float;
for;
goto;
if;
int;
long;
register;
return;
short;
sizeof;
static;
struct;
switch;
typedef;
union;
unsigned;
void;
while;
[a-zA-Z][a-zA-Z0-9_]+  {
                            //id[i] = yytext;
                           // printf("The word found was: %s and 'i' is: %d\n", id[i], i);
                            
                            insertId(yytext, newLineCnt);
                       }
"\n"                   newLineCnt++; 
[a-z]              printf("Lowercase word\n");
[A-Z]              printf("Uppercase word\n");
[0-9]              printf("Integer\n");
";"                printf("Semicolon");
"("                printf("Open parentheses\n");
")"                printf("Close parentheses");
%%
void insertId(char* str, int nLine)
{
    char num[2];
    sprintf ( num, "%d", nLine);
    static char string[100];
    
    int iter;
    for(iter = 0; iter < i+1; iter++)
    {
        if ( strcmp(str, id[iter]) == 0 )
        {
            strcat( string, ", " );
            strcat( string, num );
            strcat ( id[iter], string );
            //printf("The word found was: %s\n", id[iter]);
            return;
        }
    }



    i++;
    
   // printf("That string was: %s\n", str);
    strcpy ( string, str);
    strcat ( string, ": ");
    sprintf ( num, "%d", nLine);         
    strcat (string, num);
   
  //  sprintf ( num, "%d", nLine);
  //  strcat (string, num);
    id[i] = string;

    //printf("The word found was:   %s on line %d\n", id[i-1], nLine);
}

struct {
        char *name;
        int *lines;
        int len;
} id[1000];
int i=0;

void insertId(char* str, int nLine)
{
        int x;
        for(x=0; x<i; x++)
        {
                if(strcmp(str, id[x].name) == 0)
                {
                        id[x].lines=realloc(id[x].lines, sizeof(int)*(id[x].len+1));
                        id[x].lines[id[x].len]=nLine;
                        id[x].len++;
                        return;
                }
        }

        id[i].name=strdup(str);
        id[i].lines=realloc(id[i].lines, sizeof(int));
        id[i].lines[0]=nLine;
        id[i].len=1;
        i++;
}

Test:desktop D2K$ make
lex cxref.l
gcc -g -c lex.yy.c
cxref.l:57: error: expected ‘;', ‘,' or ‘)' before numeric constant
make: *** [lex.yy.o] Error 1
Test:desktop D2K$

%{
#include <stdio.h>
#include <string.h>
    char identifier[1000][82];
    char linesFound[100][100];
    void insertId(char*, int);
    int i = 0;
    int lineNum = 1;
%}

%x comment
%s str

%%
"/*"                        BEGIN(comment);

<comment>[^*\n]*        /* eat anything that's not a '*' */
<comment>"*"+[^*/\n]*   /* eat up '*'s not followed by '/'s */
<comment>\n             ++lineNum;
<comment>"*"+"/"        BEGIN(INITIAL);

"\n"                              ++lineNum;

auto                        ;
break                       ;
case                        ;
char                        ;
continue                    ;
default                     ;
do                          ;
double                      ;
else                        ;
extern                      ;
float                       ;
for                         ;
goto                        ;
if                          ;
int                         ;
long                        ;
register                    ;
return                      ;
short                       ;
sizeof                      ;
static                      ;
struct                      ;
switch                      ;
typedef                     ;
union                       ;
unsigned                    ;
void                        ;
while                       ;[*]?[a-zA-Z][a-zA-Z0-9_]*   insertId(yytext, lineNum);
[^a-zA-Z0-9_]+              ;
[0-9]+                      ;
%%
void insertId(char* str, int nLine)
{
    char num[2];
    sprintf ( num, "%d", nLine);
    
    int iter;
    for(iter = 0; iter <= i; iter++)
    {
        if ( strcmp(identifier[iter], str) == 0 )
        {
            strcat( linesFound[iter], ", " );
            strcat( linesFound[iter], num );
            return;
        }
    }

    strcpy( identifier[i], str );
    strcat( identifier[i], ": " );
    strcpy( linesFound[i], num );

    i++;
   
}