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

char * alloc_build_string(const char *ss[]);

int main()
{
	const char *greets[] = {"hello", " world", " all", NULL};
	char *greet = alloc_build_string(greets);
	char *greet2 = alloc_build_string((const char *[]){
			"hello world", " all", NULL
			});
	printf("%d\n", strcmp(greet, "hello world all"));
	printf("%d\n", strcmp(greet2, "hello world all"));
	free(greet);
	free(greet2);
}