comand line argument

[Harith]

hey,
Is it a must to store file names in argv so that you can view them? Or the program does it automatically even when file names are stored in another variable?

[laserlight]

You can use some other name instead of argv, but generally it is better to stick to convention.

[Harith]

You can use some other name instead of argv, but generally it is better to stick to convention.

Actually what I mean is, for example:

#include<stdio.h>

main(int argc, char *argv[])
{
         FILE  *fptr;
         
         fptr = fopen("somefile.dat","wb");
}

will this file name be stored in argv?
Sorry for not being clear before.

[grumpy]

will this file name be stored in argv?

No. Why would you expect it to?

Your code is passing a string to fopen(). That string is unrelated to argv. fopen() does not affect argv.

[Harith]

No. Why would you expect it to?

Your code is passing a string to fopen(). That string is unrelated to argv. fopen() does not affect argv.

I just thought that when you open a file you are passing an argument to main. So why is this command line argument useful?

[oogabooga]

I just thought that when you open a file you are passing an argument to main.

Nope. Opening files has nothing to do with passing an argument to main.

So why is this command line argument useful?

So that you can pass arguments to the program from the command line, but the arguments don't have to be file names.

Just keep learning the language and you'll come to understand this.

[Harith]

Nope. Opening files has nothing to do with passing an argument to main.


So that you can pass arguments to the program from the command line, but the arguments don't have to be file names.

Just keep learning the language and you'll come to understand this.

Okay, thanks