求以下程序输出结果

 #include <stdio.h>char * fun1()
{char * str = "hello";return str;
}char * fun2()
{char str[] = "world";return str;
}
int main()
{printf("%s\n", fun1());  printf("%s\n", fun2());   return 0;
}

结果：
hello
烫烫楮掞?