shell question

Code:

---

#include  <stdio.h>
#include  <sys/types.h>

void  parse(char *line, char **argv)
{
    while (*line != '\0') {      /* if not the end of line ....... */
          while (*line == ' ' || *line == '\t' || *line == '\n')
              *line++ = '\0';    /* replace white spaces with 0    */
          *argv++ = line;          /* save the argument position    */
          while (*line != '\0' && *line != ' ' &&
                *line != '\t' && *line != '\n')
              line++;            /* skip the argument until ...    */
    }
    *argv = '\0';                /* mark the end of argument list  */
}

void  execute(char **argv)
{
    pid_t  pid;
    int    status;

    if ((pid = fork()) < 0) {    /* fork a child process          */
          printf("*** ERROR: forking child process failed\n");
          exit(1);
    }
    else if (pid == 0) {          /* for the child process:        */
          if (execvp(*argv, argv) < 0) {    /* execute the command  */
              printf("*** ERROR: exec failed\n");
              exit(1);
          }
    }
    else {                                  /* for the parent:      */
          while (wait(&status) != pid)      /* wait for completion  */
              ;
    }
}

void  main(void)
{
    char  line[1024];            /* the input line                */
    char  *argv[64];              /* the command line argument      */

    while (1) {                  /* repeat until done ....        */
          printf("Shell -> ");    /*  display a prompt            */
          gets(line);              /*  read in the command line    */
          printf("\n");
          parse(line, argv);      /*  parse the line              */
          if (strcmp(argv[0], "exit") == 0)  /* is it an "exit"?    */
              exit(0);            /*  exit if it is                */
          execute(argv);          /* otherwise, execute the command */
    }
}

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I wrote that stuff,now I need to add some stuff to it.
like ';' which seperates different command from each other ex: ls;ls would give you print the result of ls 2 times.
and '>' as standard output redirection.
etc...

NOw I don't know how to fit that stuff in it.
THe only thing I can think off is to rewrite the parser function.

Help would be appreciated.
Thanks for your help.

Maybe all you need is a function that breaks up the line, obtained by gets(), into commands separated by a semi-colon before feeding it to the parser.

You should not be using gets at all: http://cpwiki.sourceforge.net/Gets

Also,

Code:

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void main(void)

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is bad.
here's why
Sorry to be a bit off topic I know it's not related to your question.