🚀 go-pugleaf

kinsman@jupiter.sun.csd.unb.ca (Aphoriel/Kinsman) writes:

>This is a question from someone new to C...

>How could I set up C code so that a program goes to a function where the
>name of the function is placed in a string variable?

You can't, but why bother?

>The specific use I'm thinking of is for an adventure game, where the
>function the parser calls depends on the verb the player used in typing
>in his command..

So set up a table and a function:

struct CommandEntry {
  char *command;
  int (* function)();
} commandTable[] = {
  {"eat",eatFunction},
  {"give",giveFunction}
  [...]
};

#define NUMCOMMANDS (sizeof(commandTable))/(sizeof(struct commandEntry))

void
callCommand(char *command)
{
   /* Go through the table until we find a match */
   for ( int commandnum = 0 ; commandnum < NUMCOMMANDS ; commandnum++ )
       /* If we find one... */
       if ( !strcmp(command,commandTable[commandnum].command) )
       {
           /* run the command and return. */
           commandTable[commandnum].function();
           return;
       }
    /* If we didn't find this command, say so. */
    fprintf(stderr,"Unrecognized command.\n");
}

Or something like that.