fill_n template<class OutputIt, class Size, class T = typename std::iterator_traits<OutputIt>::value_type> OutputIt fill_n(OutputIt first, Size count, const T& value) { for (Size i = 0; i < count; i++) *first++ = value; return first; }...
std::uninitialized_fill_n C++ Memory management library Defined in header<memory> template<classNoThrowForwardIt,classSize,classT> NoThrowForwardIt uninitialized_fill_n(NoThrowForwardIt first, Size count,constT&value); (1)(constexpr since C++26) ...
翻译:https://en.cppreference.com/w/cpp/algorithm/fill_n 定义在头文件<algorithm> 函数声明: 1 2 3 4 5 6 7 8 9 template<classOutputIt,classSize,classT > voidfill_n( OutputIt first, Size count,constT& value );// (until C++11) template<classOutputIt,classSize,classT > OutputIt fill...
fill (1) template<classForwardIt,classT=typenamestd::iterator_traits<ForwardIt>::value_type>voidfill(ForwardIt first, ForwardIt last,constT&value){for(;first!=last;++first)*first=value;} Notes Feature-testmacroValueStdFeature __cpp_lib_algorithm_default_value_type202403(C++26)List-initializatio...
#include <algorithm> #include <vector> #include <iostream> int main() { std::vector<int> v{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; std::fill(v.begin(), v.end(), -1); for (auto elem : v) { std::cout << elem << " "; } std::cout << "\n"; } Output: -1 -1...
为什么cppreference上说std::printf是表达式?可以把函数名称理解为一种常量，其中记录着函数的地址。普通的...
可以使用 std::ostream::fill 获得当前填充字符。 示例运行此代码 #include <iomanip> #include <iostream> int main() { std::cout << "默认填充: [" << std::setw(10) << 42 << "]\n" << "setfill('*'): [" << std::setfill('*') << std::setw(10) << 42 << "]\n"; } ...
<char16_t,char,std::mbstate_t>>,char16_t>conv16;std::u16string str16=conv16.from_bytes(data);std::cout<<"The UTF-8 file contains the following UTF-16 code points: \n";for(char16_t c:str16)std::cout<<"U+"<<std::hex<<std::setw(4)<<std::setfill('0')<<c<<'\n';}...
API Reference Document std::generate_nC++ Algorithm library Defined in header <algorithm> (1) template< class OutputIt, class Size, class Generator > void generate_n( OutputIt first, Size count, Generator g ); (until C++11) template< class OutputIt, class Size, class Generator > ...
std::basic_ios::fill std::basic_ios::good std::basic_ios::imbue std::basic_ios::init std::basic_ios::move std::basic_ios::narrow std::basic_ios::operator bool std::basic_ios::rdbuf std::basic_ios::rdstate std::basic_ios::setstate std::basic_ios::set_rdbuf std::basic_ios::...