How I save datas of archive to array in c?

Answer 1

What archive?

Answer 2

Docs with extension .txt, .ppm..

Answer 3

Use <studio.h> to open the file (fread()) and read it (fread()).

https://en.cppreference.com/w/c/io

A file is just a sequence of bytes, and fread will put size*count bytes in the buffer. The buffer can be, for example, an array of chars (since a char is a byte).

The rest of <stdio.h> provides helper functions for reading text files.

To read other files (like image files), you can use a library, or find the format specification, which will tell you should interpret the bytes, if you want to do it manually.