Pass Filename to another function

I'm trying to pass a filename to another function called first. But I keep getting the error "char *[50] not compatible with char *". The error is in the line "filename = strtok(....)". But I don't know how to fix it.

This is just a section of a function called main:

Code:

cmdptr =  strtok( cmdline, " " );		//retrieves first word/token in command line
		
if ( strcmp(cmdptr ,firststring) == 0) {   //firststring is just a string used to compare
			
			numptr = strtok( NULL, " ");	  //retrieves num

			num = atoi(numptr);	//converts string to int	
				
   /*ERROR HERE BUT WHY?*/ filename = strtok( NULL, " "); //retrieves filename
						
			first( num, filename );			//execute FIRST function
				
}

filename is declared as " char *filename[50]; " as a global.

Well, char *filename[50] is a really bad declaration for a filename (it gives you 50 pointers to places you could put a filename, but no actual space for one). Maybe you just want char filename[50] -- that would give you one string of up to 49 characters.

still doesn't work

I know that strtok returns a "char *"....

it just won't work

Originally Posted by awesmesk8er

I know that strtok returns a "char *"....

it just won't work

You're going to have to be more specific than that.

strtok is a function in the <string.h> library

the function looks like this:

char *strtok( char *s1, const char *s2);

Yes. That is true. And the function works fine, 'cause we've all used it. So -- what (specifically) doesn't work?

Edit: Oh, and regardless of type, you can't assign an array as a whole. You probably want strcpy(filename, strtok(whatever)).

when I set
filename = strtok( NULL, " ")

it gives me the error: Operands of = have incompatible types 'char * [50]' and 'char *'.
and Lvalue required.

but I want filename to be of type "char * [50]" so I can pass it to a function of that type "char *[ ]"

If you want filename to be of type char *[50] you can do that -- now you just have to decide which of the fifty char *'s you want to assign to. Do you want

Code:

filename[0] = strtok(whatever);

or

Code:

filename[1] = strtok(whatever);

or
.
.
.
or

Code:

filename[49] = strtok(whatever);

You have to pick a slot to put it in.

oh ok.

thank you.