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std::setfill

Defined in header ​​
template< class CharT > /*unspecified*/ setfill( CharT c ​​

在表达式中使用时out << setfill(c)设置流的填充字符。out到c...

参数

c-new value for the fill character

返回值

返回未指定类型的对象，以便在out类型的输出流的名称。std::basic_ostream<CharT, Traits>，然后表达out << setfill(n)行为就像执行了以下代码：

out.fill(n

注记

std::ostream::fill...

例

二次

#include <iostream>
#include <iomanip>
int main()
{
    std::cout << "default fill: " << std::setw(10) << 42 << '\n'
              << "setfill('*'): " << std::setfill('*')
                                  << std::setw(10) << 42 << '\n';
}

二次

产出：

二次

default fill:         42
setfill('*'): ********42

二次

另见

fillmanages the fill character (public member function of std::basic_ios)
internalleftrightsets the placement of fill characters (function)
setwchanges the width of the next input/output field (function)

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