usingnamespacestd; intmain() { std::time_tt=std::time(nullptr); std::cout<<std::put_time(std::localtime(&t),"%Y-%m-%d %H:%M:%S")<<std::endl; return0; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
std::time_t now = std::time(NULL); std::tm tm = *std::localtime(&now);//Unix时间戳转成结构 std::cout << "Today is " << std::put_time(&tm, "%Y-%m-%d %H:%M:%S") << std::endl; //Today is 2013-10-25 17:12:56 tm.tm_mon -= 100; std::time_t ago = std::mkti...
<string> // string std::string return_current_time_and_date() { auto now = std::chrono::system_clock::now(); auto in_time_t = std::chrono::system_clock::to_time_t(now); std::stringstream ss; ss << std::put_time(std::localtime(&in_time_t), "%Y-%m-%d %X"); return ss...
std::time_t 是整数类型,数值等于自00:00,Jan11970UTC(epoch)以来的秒数 std::time_ttime(std::time_t*arg)-返回当前时间,同时也会保存在 arg 所指的 std::time_t 中(如果 arg 非空-通常使用中 arg 都是空,即 std::time_t t=std::time(0) ...
<< std::put_time(local, " %z"); };using SharedMutex = ceph::async::SharedMutex<boost::asio::io_context::executor_type>;template <typename Stream> void handle_connection(boost::asio::io_context& context, RGWProcessEnv& env, Stream& stream, ...
#include<iostream>#include<cmath>intmain(){floatresult=std::pow10f(-2.0f);std::cout<<"10^-2 = "<<result<<std::endl;longdoubleresult=std::pow10l(-2.0L);std::cout<<"10^-2 = "<<result<<std::endl;return0;} 1. 2. 3. ...
3.stderr:标准错误流,默认为当前终端(屏幕),我们使用的perror函数默认输出信息到此终端. sprintf与sscanf: 代码语言:javascript 复制 struct S { char arr[10]; int age; float score; }; int main() { struct S s = { "zhangsan",20,50.0f }; char buf[100] = { 0 }; struct S temp = { ...
magic_get - std::tuple like methods for user defined types without any macro or boilerplate code. [Boost] meta - Header-only, non-intrusive and macro-free runtime reflection system in C++. [MIT] Nameof - Header-only C++17 library provides nameof macros and functions to obtain the simple ...
void * operator new(std::size_t, std::size_t); void operator delete(void*, std::size_t) noexcept; The problem occurs because of the match in function signatures between a placement delete operator you've defined, and the new global sized delete operator. Consider whether you can use ...
#include <iostream> using namespace std; class Base { public: inline virtual void who() { cout << "I am Base\n"; } virtual ~Base() {} }; class Derived : public Base { public: inline void who() // 不写inline时隐式内联 { cout << "I am Derived\n"; } }; int main() { ...