Can you write a program that prints itself?

Yes. A programme that can make a copy of itself is called a “quine”. The basic idea of most quines is: You write code that takes a string literal s and prints it, while replacing occurrences (or the occurrence) of a special substring foo in s by the value of s itself.

What is a program that prints itself called?

A quine program , or quine , is a program that outputs its own source code when run. A quine is not allowed to “step outside itself” by, for example, printing out the contents of the file in which it is contained or using introspective capabilities to print its own representation.

Is it possible to get source code?

You probably can’t get source code of any Windows app legally (because they are proprietary software ). Some people might be able to read some such source code after have signed an NDA (and probably, after having paid a lot).

What is self replicating code?

A Worm is a self-replicating program. It is self-contained and does not require a host program. The program creates the copy and causes it to execute; no user intervention is required. Worms commonly utilize network services to propagate to other computer systems [19].

Is an illegal self-replicating small program?

Virus is illegal, self-replicating small program. Polymorphic viruses are designed to avoid detection by Anti-Virus programs.

Is decompilation possible?

The bytecode formats used by many virtual machines (such as the Java Virtual Machine or the . NET Framework Common Language Runtime) often include extensive metadata and high-level features that make decompilation quite feasible.

Is a self replication program?

A quine is a computer program which takes no input and produces a copy of its own source code as its only output. The standard terms for these programs in the computability theory and computer science literature are “self-replicating programs”, “self-reproducing programs”, and “self-copying programs”.

Is a self-replicating harmful programs?

Explanation: A virus is a dangerous form of malware that can be used as an attacking tool while performing cyberattacks.

How to print source code of a program itself as output?

To print source code of a program itself as output, you can use __FILE__ to get path of current file. Program to print source code of itself as output. /** * C program to print source code of itself as output */ #include #include int main() { FILE *fPtr; char ch; /* * __FILE__ is a macro that contains path of current file.

What happens if there’s a difference between source code and output?

If there’s a difference between the source code and the output, it will be reported. Way back in the days of my youth, I produced a bilingual “self-reproducing” program. It was a combination of shell script and Informix-4GL (I4GL) source code.

What is the literal requirement for a program?

The literal requirement is just you said, literal: you have a program, its execution produces itself as the output. Nothing more nor less, that’s why it’s considered a fixed point: the execution of the program through the language semantics has itself as its ouput.