std::uppercase, std::nouppercase
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在头文件 <ios> 中定义
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std::ios_base& uppercase( std::ios_base& str ); |
(1) | |
std::ios_base& nouppercase( std::ios_base& str ); |
(2) | |
Enables the use of uppercase characters in floating-point and hexadecimal integer output. Has no effect on input.
1) 2)这是一个I / O操纵器,它可被称为与表达式如out << std::uppercase类型
out
任何std::basic_ostream,或与一个表达式如in >> std::uppercase类型in
任何std::basic_istream.原文:
This is an I/O manipulator, it may be called with an expression such as out << std::uppercase for any
out
of type std::basic_ostream or with an expression such as in >> std::uppercase for any in
of type std::basic_istream.目录 |
[编辑] 参数
str | - | 参考I / O流
|
[编辑] 返回值
str
(参考操作后到流)原文:
str
(reference to the stream after manipulation)[编辑] 示例
#include <iostream> int main() { std::cout << std::hex << std::showbase << "0x2a with uppercase: " << std::uppercase << 0x2a << '\n' << "0x2a with nouppercase: " << std::nouppercase << 0x2a << '\n' << "1e-10 with uppercase: " << std::uppercase << 1e-10 << '\n' << "1e-10 with nouppercase: " << std::nouppercase << 1e-10 << '\n'; }
输出:
0x2a with uppercase: 0X2A 0x2a with nouppercase: 0x2a 1e-10 with uppercase: 1E-10 1e-10 with nouppercase: 1e-10
[编辑] 另请参阅
清除指定的ios_base标志 (函数) | |
设置指定的ios_base标志 (函数) |