c++ 直接定义二进制变量

#include <iostream>
#include <cstdio>

int main (int argc, char *argv[]) {
  int a = 0b11111111;
  int b = 123;
  int c = 0173;
  int d = 0x7B;
  int e = 0x3.ABCp-10;
  int f = 100'00'00;
  printf("%d\n", a);
  return 0;
}