C language problem writer creates two new files test 1.txt and test2. Txt, and copy the contents of the file test 1.txt to test2.t ...

Copy d:\test 1.txt to the d:\temp folder and name it test2.txt (see figure 1). When entering ... a bug in C language. At first, I received the task book, but I had no idea. Finally, I divided it according to the contents of the task book. ...