integer literal
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目录 |
[编辑] 语法
| [0-9]+ type_suffix | (1) | ||||||||
| 0 [0-7]+ type_suffix | (2) | ||||||||
| 0 x [0-9a-b]+ type_suffix | (3) | ||||||||
[编辑] 解释
＃十进制记数法
Original:
# Decimal notation
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＃八进制表示法
Original:
# Octal notation
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＃十六进制记数法
Original:
# Hexadecimal notation
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[编辑] 类型的后缀
（没有后缀）
Original:
;(no suffix)
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- int
- u
- unsigned int
- l
- long
- ul
- unsigned long
- ll （C++11 起）
- long long
- ull （C++11 起）
- unsigned long long
[编辑] 注释
- 在整数常量的字母不区分大小写的Original:Letters in integer constants are case-insensitive.The text has been machine-translated via Google Translate.
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[编辑] 为例
std::cout << 123 << '\n' << 0123 << '\n' << 0x123 << '\n' << 12345678901234567890UL << '\n' << -1u << '\n' << -1ull << '\n';
Output:
123 83 291 12345678901234567890 4294967295 18446744073709551615
（从一个x86_64的处理器的输出）
Original:
(output from an x86_64 processor)
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