Self-running source: Difference between revisions
Jump to navigation
Jump to search
Content added Content deleted
(new page) |
No edit summary |
||
(2 intermediate revisions by the same user not shown) | |||
Line 5:
<source lang="C">
#if 0
gcc -Wall $0 && exec ./a.out; exit 1
#endif
Line 27:
* https://coderwall.com/p/e1htcg/self-compiling-source-code
* https://twitter.com/dannas_/status/1238066416286400512
* https://twitter.com/_monoid/status/1264858552440586248
[[Category:C]]
[[Category:Programming]]
[[Category:C preprocessor snippets]]
|
Latest revision as of 11:24, 25 May 2020
C
Set the executable bit on the following polyglot C/shell source file:
#if 0
gcc -Wall $0 && exec ./a.out; exit 1
#endif
#include <stdio.h>
int main(int argc, char *argv[])
{
printf("Hello world!\n");
return 0;
}
This is my favourite version because:
- readable (e.g. no multiline comments)
- minimal boilerplate
- only runs the program if it compiled successfully
- exits with 1 if there was an error