Program name

Program name is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

It is useful to programmatically access a program's name, e.g. for determining whether the user ran "python hello.py", or "python hellocaller.py", a program importing the code from "hello.py".

C

C has difficulty accessing source code filenames, because C code must be compiled into an executable. However, C can access the executable's filename.

<lang c>#include <stdio.h>

int main(int argc, char **argv) { printf("Executable: %s\n", argv[0]);

return 0; }</lang>

C++

C++ has difficulty accessing source code filenames, because C code must be compiled into an executable. However, C++ can access the executable's filename.

<lang cpp>#include <iostream>

using namespace std;

int main(int argc, char **argv) { cout << "Executable: " << argv[0] << endl;

return 0; }</lang>