Hello,

I have a C program say cProg.c that asks the user to enter a filename, (opens that file and operates over it) and saves the output in a file "output.txt"


I have a PERL script main.pl
I wish to somehow generate the output.txt when I run main.pl

I am using vi editor to do all this and my university already has all the required compilers, interpreters etc...

For easier understanding, lets say this is how the C file looks like:
==============cProg.c===================== 
#include< stdio.h>
main (int argc, char *argv[])
{
        FILE *fp;
        if (argc!= 2)
                printf ("Please Enter a FileName\n");
        else
        {
                fp = fopen (argv[1], "r");
                printf ("File Found\n");   
                fclose (fp);
        }
        return 0;
}

[download]

=================cProg.c Ends=================
I compile and run this program this way:
[ ~ ] gcc cProg.c
[ ~ ] ./a.out input.txt > output.txt

This generates output.txt which has "File Found" as its only contents.

Now I wish to write a PERL script which would automatically generate "output.txt" when i execute the PERL script
=================main.pl====================

#!/usr/bin/perl

./a.out input.txt > output.txt   ###How should I do this?

$output_file="output.txt";
open(OP, $output_file) || die("Could not open file!");
@sequence=<OP>;     # tosses the contents of "output.txt" in an array 
+"@sequence" to work on.

[download]
===============mail.pl ENDS====================

Kindly show me the path to heaven =)

In reply to How to run C object code in PERL by masala_curry

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