C++ 关键词：protected - cppreference.com

(C++11)

(C++11)

and

and_eq

asm

(*)

bitand

bitor

bool

break

case

catch

char

(C++20)

(C++11)

(C++11)

class

compl

(C++20)

const

(C++20)

(C++11)

(C++20)

const_cast

continue

(C++26)  

(C++20)

(C++20)

(C++20)

(C++11)

default

delete

do

double

dynamic_cast

else

enum

explicit

export

extern

false

float

for

friend

goto

if

inline

int

long

mutable

namespace

new

(C++11)  

not

not_eq

(C++11)

operator

or

or_eq

private

protected

public

register

reinterpret_cast

(C++20)

return

short

signed

(*)

static

(C++11)

static_cast

struct

switch

template

this

(C++11)

throw

true

try

typedef

typeid

typename

union

unsigned

using

virtual

void

volatile

wchar_t

while

xor

xor_eq