C - 我如何制作一个函数，通过给它文件名来找到它必须使用的文件的位置？ （视窗）

Question

I am having trouble with the function fopen() . I would always send the exact location of a file as an arguement to fopen() , which would look something like this:

fopen("c:\\\\Users/Username/Desktop/Projects/program_name/version 1.0/data/important_data.txt", "r");

That works just fine on my computer, but what if I decide to transfer the program to another computer? The location would completely change.

It would no longer be:

c:\\\\Users/Username/Desktop/Projects/program_name/version 1.0/data/important_data.txt

But it would rather be something like:

c:\\\\Users/OtherUsername/Desktop/program_name/version 1.0/data/important_data.txt

My question is, how do I make a portable function which can obtain the location of a file, if I only give the name (including the type eg .txt) of the file to the function?

Keep in mind, I've been learning C for less than a year. There are still a lot of things which I must learn, and things like this are of high importance.

Answer 1

this is operating system specific. on linux you can use the locate shell command and parse its output ( http://www.linfo.org/locate.html )

C: Run a System Command and Get Output?

How do I execute a Shell built-in command with a C function?

however this solution will only work on linux. i think yano 's solution in the comments above is better ...