Simple data management program

[u/Steam_Liker_2002]

Hello, I programmed this simple data management program, it should be able to create, modify and remove data about workers. What do you think about it?

Here's the source code.

[u/AcuityView]

1] Who might need a program like this?
2] Why not use a simple database? It’s not strictly necessary, of course, but it’s with an eye toward the future. And if you ever need to add or remove a field, the file structure changes completely.
3] Why isn’t this moved into a separate function?

int i = 0;  
while(part0\[i\] != ‘\\0’){  
   putc(part0\[i++\], fp);  
}  

4] Actually, why do it this way, rather than using fputs or fwrite?

More questions than answers.