pointers seg faulting

Im trying to get some simple functions going but this keeps seg faulting on me. Ive tried it in a few ways with no luck, tried IRC with no luck either(lower life forms).

Code:

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


int main() {
 	char test[] = "123TEST456";
	char *result;
	
	get_variable(test, result);
	printf("\n\t%s\n", result); /* crashes here with: result, *result and &result */
	free(result);
  	
	return 0;
	
}

int get_variable(char *src, char *dest) {
 	dest = malloc(100); /* just for now */
	
	copy(src, dest, 3, 7);
	printf("get_variable dest = %s\n", dest);

	return 0;
}


int copy(char *src, char *dest, int start, int end) { 
  	int x = start;
	int y = 0;
	
	while( x < (end + 1) ) {
		dest[y] = src[x];
	
		++y;
        	                ++x;
	}
	
	dest[y] = (char)NULL; 

	return 0;
}

man, talk about slow preview times...

Run this:

Code:

#include <stdio.h>

void foo(char *p)
{
    p = (char*)1;
}//foo

int main ()
{
    char *p = (char*)0;

    printf("p before call: %d\n", p);
    foo(p);
    printf("p after call: %d\n", p);

    return 0; 
}//main

Do the same with the value of result before and after the call to get_variable.

gg