linkedlist error: undefined reference

[deltagods]

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "list_funcs.h"

int main()
{
	struct data_node *first = NULL, *new_node, *ptr = NULL;
	insert(&first, 9);
	char command;
	char name [25];
	int key;
	int exit = 0;
	while(!exit)
	{
		printf("\nEnter list command (+-flx):");
		scanf("%c", &command);
		switch(command)
		{
			case '+':
				printf("+ detected\nEnter key data: ");
				scanf("%d", &key);
				printf("What string to store? ");
				scanf("%s", name);
				//ptr = insert(&first, key);
				//strcpy(ptr->name, name);
				//printf("%s", name);
				break;
			default:
                    break;
		}
	}
	getchar();
}

[Linker error] undefined reference to `insert'

If i put the insert function within this file it doesnt throw that error.

[quzah]

Are you actually linking your files?

gcc -o myfile myfile.c myotherfile.c myyetanotherfile.c -Wall -pedantic

Does your header file actually contain that function's prototype?

Quzah.

[slingerland3g]

Can you give us what 'list_funcs.h' contains please? I agree with quzah. The compiler needs to know all there is to know about your insert function and its parameters.