file I/O, user managed file name C

[primpa]

Hi, I am working on a program that read's in a file
and i want the user to manage what file to read in(the file name), and what file to write to.
can someone help me with that ?

thanks //Primus

[dmjpro]

Hi, I am working on a program that read's in a file
and i want the user to manage what file to read in(the file name), and what file to write to.
can someone help me with that ?

thanks //Primus

You will let the user to set the Input and Output File name?
Or something else you want?

Kind regards,
Dmjpro.

[sicarie]

Hi, I am working on a program that read's in a file
and i want the user to manage what file to read in(the file name), and what file to write to.
can someone help me with that ?

thanks //Primus

Sure, what do you have so far or where are you getting stuck?

[primpa]

yes exactly, user will be asked to enter file name to read from, or to write to.
so that u can save things in one file then load from another file.

so far i know how to read and write from/to a file that is in the "code",
i specify file name before i compile in the program source code.

 
FILE *writefile;
writefile = fopen("movielist.txt","wt"); 
 
    while (list[i].occupied == 1)
    {
        fprintf(writefile, "%s",list[i].name);
        fprintf(writefile, "%s",list[i].genre);
        fprintf(writefile, "%d\n",list[i].year);
        fprintf(writefile, "%d\n",list[i].grade);
        i++;
    }
 
    fclose(writefile);
 
 

do not worry about list[i].occupied, this piece of code does work, if the file
movielist.txt exist in the same directory.

i had an idea to do it like this: writefile = fopen("%s(myfilename)","w");
did not work so well

thanks // Primus

[sicarie]

yes exactly, user will be asked to enter file name to read from, or to write to.
so that u can save things in one file then load from another file.

so far i know how to read and write from/to a file that is in the "code",
i specify file name before i compile in the program source code.

do not worry about list[i].occupied, this piece of code does work, if the file
movielist.txt exist in the same directory.

i had an idea to do it like this: writefile = fopen("%s(myfilename)","w");
did not work so well

thanks // Primus

I'm sorry, I'm not sure what you are asking, are you trying to append the path to the file name? As you said, your code works, what is your question?

[primpa]

You will let the user to set the Input and Output File name?
Or something else you want?

Kind regards,
Dmjpro.

this is what i want, i think i said that in the first post, and my second post was a
complement to that one. Any how, i try to express my self better now, my question being:

How do i let the user chose the file name, user being he person who runs the
program.
I have some data in the program and i want to output it to a file that don't exist.
And so let the user make the file name, path is not important. And the same thing to input data from a file to the program.
The user should specify file name when deeling with file operations

I really hope this is clear ?

thanks / Primpa