#include <stdio.h>
#define STR1 ""
#define STR2 "a"

int	main(void)
{
	char	dest[] = STR1;
	char	src[] = STR2;
	printf("dest: %s src: %s\n", dest, src);
	ft_strcat(dest, src);
	printf("dest: %s src: %s\n", dest, src);
	return (0);
}