Easily allocate a list of any amount of strings.

string_list.c

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>

size_t counter(char *str) {
	size_t commas = 0;
	int string = 0;
	
	while (*str) {
		//escape commas inside string;
		if (*str == '"' && *(str - 1) != '\\') string = !string;
		
		//count commas
		if (string == 0)
			if (*str == ',') commas++;					
		str++;
	}
		
	return commas+1;
}

#define s_list(...) _s_list(counter(#__VA_ARGS__), __VA_ARGS__)
char** _s_list(size_t count, ...) {
	int i;
	va_list args;	
	va_start(args, count);	
	
	char **list = (char**)malloc(sizeof(char*) * count + 1);
	assert(list != NULL);	
	
	for (i=0; i<count; i++) {
		char *word = va_arg(args, char*);
		
		list[i] = (char*)malloc(sizeof(char) * strlen(word) + 1);
		assert(list[i] != NULL);
				
		strcpy(list[i], word);		
	}	
	
	list[i] = (char*)malloc(sizeof(char) + 1);
	assert(list[i] != NULL);	
	memset(list[i], 0, 1);
	
	return list;
}

#define s_free(...) _s_free(__VA_ARGS__, 0)
void _s_free(char **list, size_t count, ...) {
	int i;
	for (i=0; (strcmp(list[i], "") != 0) || i < count; i++) {
		free(list[i]);
	}
	
	free(list[i]);
	free(list);
}

/*///////////////////////////////////
	
		Testing:
		
///////////////////////////////////*/

int main() {
	char **my_list = s_list("Hello world!", "foo", "bar", "foobar");
	
	printf("%s\n", my_list[0]);
	printf("%s\n", my_list[1]);
	printf("%s\n", my_list[2]);
	printf("%s\n", my_list[3]);
	
	s_free(my_list); //if second argument is not specified, it will free until finds an empty string
}