整数字面量¶
https://zh.cppreference.com/w/cpp/language/integer_literal
1 数位间可插入单引号¶
数位间可插入作为分隔符的可选的单引号('
)。
- 示例,下列变量也被初始化为相同值
unsigned long long l1 = 18446744073709550592ull; // C++11
unsigned long long l2 = 18'446'744'073'709'550'592llu; // C++14
unsigned long long l3 = 1844'6744'0737'0955'0592uLL; // C++14
unsigned long long l4 = 184467'440737'0'95505'92LLU; // C++14