#include <stddef.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 <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\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\tswitch (src[j])\n\t\t\t\t{\n\t\t\t\t\tcase 10:\twrite(1, \"\\\\n\", 2); break;\n\t\t\t\t\tcase 9:\t\twrite(1, \"\\\\t\", 2); break;\n\t\t\t\t\tcase '\\\\':\twrite(1, \"\\\\\\\\\", 2); break;\n\t\t\t\t\tcase '\"':\twrite(1, \"\\\\\\\"\", 2); break;\n\t\t\t\t\tdefault:\twrite(1, &src[j], 1);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\telse\n\t\t{\n\t\t\twrite(1, &src[i], 1);\n\t\t}\n\t}\n\n\tfoo();\n\treturn 0;\n}\n// One of the comments must be present outside of your program.\n";
	for (size_t i = 0; src[i]; ++i)
	{
		if (36 == src[i])
		{
			for (size_t j = 0; src[j]; ++j)
			{
				switch (src[j])
				{
					case 10:	write(1, "\\n", 2); break;
					case 9:		write(1, "\\t", 2); break;
					case '\\':	write(1, "\\\\", 2); break;
					case '"':	write(1, "\\\"", 2); break;
					default:	write(1, &src[j], 1);
				}
			}
		}
		else
		{
			write(1, &src[i], 1);
		}
	}

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