include cxxabi include cstdio include cstdlib include unistd include c

#include <cxxabi.h>
#include <cstdio>
#include <cstdlib>
#include <unistd.h>
#include <cstring>

int main(int argc, char **argv) noexcept {
	if (argc != 2) {
		return EXIT_FAILURE;
	}
	
	int status;
	size_t length;
    char buff[] = { 0 };
    char *ret = abi::__cxa_demangle(argv[1], nullptr, &length, &status);
	if (status != 0) {
        printf("%s", argv[1]);
        write(1, argv[1], strlen(argv[1]));
        write(1, buff, sizeof(buff));
		return status;
	}
	write(1, ret, length);
	write(1, buff, sizeof(buff));
	free(ret);
	return EXIT_SUCCESS;
}