Write a single file that I can save as foo.c.py that I can run as either a C program or a python program, and so both will print "hello world". Specifically if I run `python foo.c.py` or `gcc foo.c.py && ./a.out` I should see "hello world" printed to the console.
Write a single file that I can save as foo.c.py that I can run as either a C program or a python program, and so both will print "hello world". Specifically if I run `python foo.c.py` or `gcc foo.c.py && ./a.out` I should see "hello world" printed to the console.
To create a polyglot file that works as both a C program and a Python script, we can leverage comments and line continuation characters. Here's the solution:
1 2 3 4 5 6 7 | #include <stdio.h> \ int main() { \ printf("hello world\n"); \ return 0; \ } print("hello world") |
I extracted the following code from that output:
1 2 3 4 5 6 7 | #include <stdio.h> \ int main() { \ printf("hello world\n"); \ return 0; \ } print("hello world") |
Running the following program:
1 2 3 4 5 6 7 | #include <stdio.h> \ int main() { \ printf("hello world\n"); \ return 0; \ } print("hello world") |
main.c:3:1: warning: extra tokens at end of #include directive
3 | int main() { \
| ^~~
main.c:8:7: error: expected declaration specifiers or '...' before string constant
8 | print("hello world")
| ^~~~~~~~~~~~~
main.sh: line 2: ./a.out: No such file or directory
Testing if the previous output contains the string hello world
: True
Running the following program:
1 2 3 4 5 6 7 | #include <stdio.h> \ int main() { \ printf("hello world\n"); \ return 0; \ } print("hello world") |
File "/usr/src/app/main.py", line 3
int main() { \
^^^^
SyntaxError: invalid syntax
Testing if the previous output contains the string hello world
: False