考虑到我有以下程序来确定多字节字符的大小.
#include<iostream>
int main()
{
std::cout<<"size of multibyte characters : "<<sizeof('ab')<<std::endl;
}
我的GCC编译器输出为4.
所以我有以下问题：
>多字节字符文字的大小是多少？
> sizeof(‘ab’)是否等于sizeof(int)？
这是一个所谓的多字符文字,与单个字符对应物不同,它不是char类型,而是int类型(假设它是受支持的).按照
[lex.ccon]/2的规定,强调我的：
A character literal that does not begin with u8,u,U,or L is an
ordinary character literal. An ordinary character literal that
contains a single c-char representable in the execution character set
has type char,with value equal to the numerical value of the encoding
of the c-char in the execution character set. An ordinary character
literal that contains more than one c-char is a multicharacter
literal. A multicharacter literal,or an ordinary character literal
containing a single c-char not representable in the execution
character set,is conditionally-supported,has type int,and has an
implementation-defined value.
所以你打印sizeof(int),就像你怀疑的那样.
