about commandline arguments

[Abdi]

Hi fellows,

I have little program here that I want to incorprate some more
commandline arguments and it would be run this way:

<proramname> rounds FFFFF ENC < fileIn > fileOut
-------- ------- -----

rounds = number of rounds in a loop
FFFFFF = hex value used as key
ENC = means to be encrypted

the underlined args are the new ones and also would like to
use in loop as stopping condition.

can anyone tell me how can incoorprate the 3 more args ?

thanks in advance.

here is tha program:

code

/* Function: Open files */
bool open_files (FILE *infile, FILE *outfile)
{
    
    bool retval;
    
    infile = fopen ("test.txt", "r");
    outfile = fopen ("res.txt", "w");
    
    if (infile == NULL || outfile == NULL)
    {
        close_files (infile, outfile);
        retval = false;
    }
    else
    {
        retval = true;
    }
    
    return retval;
}

[Shadow]

> can anyone tell me how can incoorprate the 3 more args ?
I'd love to help, but it seems as if I am only presented with a file manipulating function that accepts file input & output.

I don't see any attempt at your command line parameter section, or even the general area of the code where it's at.

Do a search for command line arguments through these baords.

[Salem]

> can anyone tell me how can incoorprate the 3 more args
Since your program had no arguments to start with....

proramname < fileIn > fileOut
Has no arguments, it has redirections which are managed by the shell, and your program just deals with stdin and stdout

Simple args code

int main ( int argc, char *argv[] ) {
  int i;
  for ( i = 0 ; i < argc ; i++ ) {
    printf( "Arg %d is %s\n", i, argv[i] );
  }
  return 0;
}

Once you know where/how "rounds FFFFF ENC" appear, you should be able to figure out how to use them