PoC macros to do error handling in C

error_handling.c

#include <stdio.h>
#include <string.h>

#define CATCH(name) \
  if (0)            \
  _catch_##name:

#define FAIL(name) goto _catch_##name

#define FAIL_IF(expr, name) \
  if (expr)                 \
  {                         \
    FAIL(name);             \
  }

int main(int argc, char **argv)
{
  FAIL_IF(argc < 2, invalid_arguments);
  FAIL_IF(strcmp(argv[1], "hi"), invalid_arguments);

  CATCH(invalid_arguments)
  {
    puts("Erro: Invalid arguments! :@");
    return 1;
  }

  puts("Hi! :)");
  return 0;
}