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https://www.tsingfun.com/it/cpp/1513.html 

_access头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术

_access头文件_access头文件 #include #include <io.h> _access 头文件
https://www.tsingfun.com/it/cpp/1514.html 

std::string截取字符串,截取ip:port - C/C++ - 清泛网 - 专注C/C++及内核技术

std::string截取字符串,截取ip:portstd::string ip("127.0.0.1:8888");int index = ip.find_last_of(':'); 获取ipip.substr(0, index).c_str(); 获取portip.substr(index + 1).c_str();std::string ip("127.0.0.1:8888"); int index = ip.find_last_of(':'); // 获取ip ip.substr(0, index).c_str();...
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解决:Successful WSAStartup not yet performed. Error code : 10093. - C...

解决:Successful WSAStartup not yet performed. Error code : 10093.出现10093错误的原因是应用程序没有调用 WSAStartup,或者 WSAStartup 失败。原因:调用WSASocket等Socket函数之前必须先执行WSAStartup...出现10093错误的原因是应用程序没有调用 WSAStartup...
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sndPlaySound, SND_ASYNC 头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术

sndPlaySound, SND_ASYNC 头文件#include <mmsystem.h>#pragma comment(lib, "winmm.lib")#include <mmsystem.h> #pragma comment(lib, "winmm.lib")sndPlaySound SND_ASYNC 头文件
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C++程序结果出现1.#inf 1.#IO - C/C++ - 清泛网 - 专注C/C++及内核技术

C++程序结果出现1.#inf 1.#IO表象原因:浮点数越界了(超过FLT_MAX最大值了),1.#IO是%lf格式化出来的字符串。极可能原因:除0了,也就是f1 = f2 0。做任何除法...表象原因:浮点数越界了(超过FLT_MAX最大值了),1.#IO是 %lf 格式化...
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error: ‘uint16_t’ does not name a type - C/C++ - 清泛网 - 专注C/C++及内核技术

error: ‘uint16_t’ does not name a type#include <stdint.h> 解决。 ** * @file stdint.h * Copyright 2012, 2013 MinGW.org project * * Permission is hereby ...#include <stdint.h> 解决。 /** * @file stdint.h * Copyright 2012, 2013 MinGW.org project * * Permission is hereby granted, ...
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XXX.cc:100: error: ‘::strerror’ has not been declared - C/C++ - 清泛网 - 专注C/C++及内核技术

XXX.cc:100: error: ‘::strerror’ has not been declared#include <string.h>解决。#include <string.h> 解决。strerror
https://www.tsingfun.com/it/cpp/1527.html 

C++类的前置申明 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++类的前置申明class A; (而非 include "A.h",可能暂时都没有类A的定义)使用前置申明后,只能使用A的指针(32位编译器占4字节,64位编译器占8字节...class A; (而非 include "A.h",可能暂时都没有类A的定义) 使用前置申明后,...
https://www.tsingfun.com/it/cpp/1528.html 

sizeof、strlen简单总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

sizeof、strlen简单总结sizeofstrlenconst char* p4字符串长度std::string4字符串长度"......"字符串长度+1 (' 0')字符串长度 sizeof strlen const char* p 4 字符串长度 std::string 4 字符串长度 "......" 字符串长度+1 ('\0')...
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ThreadXxx.h:100: error: ‘pthread_t’ was not declared in this scope -...

ThreadXxx.h:100: error: ‘pthread_t’ was not declared in this scopepthread_t头文件 usr include bits pthreadtypes.h中定义:typedef unsigned long int pthread_t;它是一个线程的标识符。#include <pthread.h> 解决。pthread_t头文件/usr/include/bits/pthreadtypes.h中定义: ...