#include <stddef.h>
#include <string.h>
#include <unistd.h>

void
foo(void)
{
	write(2, "Hello world!\n", 13);
}

int
main(void)
{
	// One of the comments must be present in the main function
	char	*src = "#include <stddef.h>\n#include <string.h>\n#include <unistd.h>\n\nvoid\nfoo(void)\n{\n\twrite(2, \"Hello world!\\n\", 13);\n}\n\nint\nmain(void)\n{\n\t// One of the comments must be present in the main function\n\tchar\t*src = \"$\";\n\tchar\tbuff[1024];\n\tsize_t\tlen = 0;\n\tsize_t\tbuff_max = sizeof(buff) - 1;\n\tfor (size_t i = 0; src[i]; ++i)\n\t{\n\t\tif (36 == src[i])\n\t\t{\n\t\t\tfor (size_t j = 0; src[j]; ++j)\n\t\t\t{\n\t\t\t\tif (len + 2 > buff_max) { write(1, buff, len); len = 0; }\n\t\t\t\tswitch (src[j])\n\t\t\t\t{\n\t\t\t\t\tcase 10:\tmemcpy(buff + len, \"\\\\n\", 2); len += 2; break;\n\t\t\t\t\tcase 9:\t\tmemcpy(buff + len, \"\\\\t\", 2); len += 2; break;\n\t\t\t\t\tcase '\\\\':\tmemcpy(buff + len, \"\\\\\\\\\", 2); len += 2; break;\n\t\t\t\t\tcase '\"':\tmemcpy(buff + len, \"\\\\\\\"\", 2); len += 2; break;\n\t\t\t\t\tdefault:\tbuff[len++] = src[j]; break;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\telse\n\t\t{\n\t\t\tif (len + 1 > buff_max) { write(1, buff, len); len = 0; }\n\t\t\tbuff[len++] = src[i];\n\t\t}\n\t}\n\tif (len > 0) write(1, buff, len);\n\n\tfoo();\n\treturn 0;\n}\n// One of the comments must be present outside of your program.\n";
	char	buff[1024];
	size_t	len = 0;
	size_t	buff_max = sizeof(buff) - 1;
	for (size_t i = 0; src[i]; ++i)
	{
		if (36 == src[i])
		{
			for (size_t j = 0; src[j]; ++j)
			{
				if (len + 2 > buff_max) { write(1, buff, len); len = 0; }
				switch (src[j])
				{
					case 10:	memcpy(buff + len, "\\n", 2); len += 2; break;
					case 9:		memcpy(buff + len, "\\t", 2); len += 2; break;
					case '\\':	memcpy(buff + len, "\\\\", 2); len += 2; break;
					case '"':	memcpy(buff + len, "\\\"", 2); len += 2; break;
					default:	buff[len++] = src[j]; break;
				}
			}
		}
		else
		{
			if (len + 1 > buff_max) { write(1, buff, len); len = 0; }
			buff[len++] = src[i];
		}
	}
	if (len > 0) write(1, buff, len);

	foo();
	return 0;
}
// One of the comments must be present outside of your program.