C++ Make a file of a specific size

Question

Here is my current problem: I am trying to create a file of x MB in C++. The user will enter in the file name then enter in a number between 5 and 10 for the size of the fil

Answer 1

Your code doesn't work because you are using fputs which writes a null-terminated string into the output buffer. But you are trying to write all nulls, so it stops right when it looks at the first byte of your string and ends up writing nothing.

Now, to create a file of a specific size, all you need to do is to call truncate function (or _chsiz for Windows) exactly once and set what size you want the file to be.

Good luck!