Shell stub for C, makes the source file compile itself just by running it (C/Bash polyglot)

shell_c.c

#define SHELL_STUB /* 
CC="gcc"; "$CC" -o "$0.elf" "$0"; ./"$0.elf"; rm -rf "$0.elf"; exit
*/

#include <stdio.h>

int main(void) {
	printf("Hello! ^w^\n");
	
	return 0;
}