printing statements

**kurz7** · 04-25-2003

hi anyone see anything wrong with this?
i keep getting these errors. Do i need to define prototypes or something?
All i want to do is get a random quote when i call that function. When i call it i want it to print out a quote.

warning C4013: 'get' undefined; assuming extern returning int
error C2371: 'get' : redefinition; different basic types

Code:

void get(void) 
{
  	int val;
  	val=rand()%4;
  	switch(val) {
  	case 0: printf( "Hello!\n " ); break;
  	case 1: printf( "How Are YOU!\n " ); break;
  	case 2: printf( "abcdefg\n" ); break;
  	case 3: printf( "hey there\n" ); break;
  	case 4: printf( "What!\n" ); break;
	}
}

**kurz7** · 04-25-2003

hmm i threw in some function prototypes and it produced no error. Why would you need function prototypes in this case and not in some other cases??

Aslo im using MVC++6.0 and sometimes i get an error with linking? ive compiled and it says no warnings or erros then this pops up. any ideas??

--------------------Configuration: get - Win32 Debug--------------------
Linking...
get.obj : error LNK2001: unresolved external symbol _get
Debug/get.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

get.exe - 2 error(s), 0 warning(s)

**DavT** · 04-25-2003

It works for me as long as get() is declared before it is called. Can't really see why you would get the linking error if the code is structured correctly. This should work for example:

Code:

#include <stdlib.h>
#include <stdio.h>

void get(void);

int main(void)
{
	get();

	return 0;
}

void get(void) 
{
  	int val;
  	val=rand()%4;
  	switch(val) {
  	case 0: printf( "Hello!\n " ); break;
  	case 1: printf( "How Are YOU!\n " ); break;
  	case 2: printf( "abcdefg\n" ); break;
  	case 3: printf( "hey there\n" ); break;
  	case 4: printf( "What!\n" ); break;
	}
}

Also note that rand()%4 will never return 4...

**kurz7** · 04-25-2003

why wont rand()%4 ever equal 4?

will rand() ever equal 0? then 0%4 = 4? isnt it?

**ronin** · 04-25-2003

isn't get a keyword in a cpp compiler? Try renaming your function GET, getR, or something. I think that is what "Redifinition" is going on about.

You don't need the prototype if you provide the definition before main unless you're using Code Warrior that is.

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