A program that produces its source code as output

[prakash.athani]

Can anyone think about it and post replies?

[The_Big_K]

No tries here? Where are our *crazy* computer engineers?

[sauravgoswami]

well its possible to write a programme to generate source codes,and it is possible here too,but the challenge is to generate codes according to the need of the hour,say less memory space,more sturdy,preference of tools so.on...

[sriramchandrk]

There are 3 types of executable programs (interpreted(basic, perl) , compiled programs (c, pascal) & semi interpreted (java) )

You can produce its own source code as output only in interpreted programs.

its possible for semi interpreted using a process called as decompilation but the output may not be exactly same as initial source.

It not possible for compiled program.

example for interpreted program using perl.
=========================

#!/usr/bin/perl

open(INFILE, $0);
while(<INFILE>)
{
print "$_";
}

=========================

Thanks & Regards
Sriram

[aashu_itdude]

this c++ code reads the source file and displays the code as output. Its not a perfect code for this query but it can be further developed.

#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<fstream.h>
void main()
{
clrscr();
int c=0;
char a[238];
ifstream fin("out.cpp"); //name of program
while(!fin.eof())
{
fin.read(a,238);
}
puts(a);
getch();
}

[emYth]

Assuming that the source file names test.cpp

#include<iostream>
#include<string>
using namespace std;

int main()
{
    freopen("test.cpp","rt",stdin);
    string g;
    while(getline(cin,g)&&cin)
    {
      cout<<g<<endl;
    }
    return 0;
}

[Predictor]

There are 3 types of executable programs (interpreted(basic, perl) , compiled programs (c, pascal) & semi interpreted (java) )

...but there have been BASIC compilers and C interpreters. ???


-Will Dwinnell
Data Mining in MATLAB

[goyal420]

import java.io.*;
class Source
{
public static void main(String args[])throws IOException
{
FileReader fr=new FileReader("Source.java");
int c;
while((c=fr.read())!=-1)
{
System.out.print((char)c);
}
}
}

[malardevi]

Can anyone think about it and post replies?

I think try it by using the same file name in that program. open the same file read it and then print it. just try it.