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C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...种方式是直接调用c的函数库。 就是函数 int _access(const char* path,int mode); 这个函数的功能十分强大。 可以看看msdn的详细介绍 #include <io.h> #include <stdio.h> #include <stdlib.h> int main( void ) { // Check for existence. if( (_access( "c...
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vc/mfc *通配符 批量删除文件 - C/C++ - 清泛网 - 专注C/C++及内核技术

...tion函数:#include "stdafx.h"#include <windows.h>int _tmain(int argc, _TCHAR*...直接上代码,可直接运行亲测有效,使用SHFileOperation函数: #include "stdafx.h" #include <windows.h> int _tmain(int argc, _TCHAR* argv[]) { LPTSTR delFileName = L"c:/test/test*.txt"...
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C语言面试那些事儿──一道指针与数组问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

...─一道指针与数组问题首先看如下代码:int main(int argc, char** argv){ int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); ...首先看如下代码: int main(int argc, char** argv) { int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); printf("%d,%d\n", *(a+1...
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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

...2012, 2013 MinGW.org project * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modif...
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c/c++如何获取CPU的序列号? - C/C++ - 清泛网 - 专注C/C++及内核技术

...0; unsigned long st2 = 0; unsigned long s1,s2; unsigned char vendor_id[]="------------"; char CPUSERIAL[20]; memset(CPUSERIAL,0,20); __asm{ xor eax,eax cpuid mov dword ptr vendor_id,ebx mov dword ptr vendor_id[+4],edx mov dword p...
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error C2758: “ConstInit::cival”: 必须在构造函数基/成员初始值设定项列...

... int ival; const int cival; int &rival; }; int main(int argc, char *argv[]) { ConstInit ci; } 这里引用类型rival以及const类型cival都没有在初始化列表中初始化,因此报错。解决办法就是在初始化列表中初始化这些特殊的类成员。如下...
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Oracle nvarchar和varchar相互转换、联合查询 - 数据库(内核) - 清泛网 - ...

Oracle nvarchar和varchar相互转换、联合查询场景:联合查询(union all)Oracle两张表,同一组字段的数据类型不一致,分别是nvarchar和varchar。这时联合查询报错如下:ora12704:字...场景:联合查询(union all)Oracle两张表,同一组字段的...
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msvcr110d.dll!_CrtIsValidHeapPointer(const void * pUserData) 行 2036 ...

...出现问题了。 可能原因2:delete释放了常字符串。如 char *p = "abc"; delete p; 可能原因3: CString m_strTest; ... GetPrivateProfileString(INI_SECTION, "test", "", m_strTest.GetBuffer(), MAX_PATH, INI_FILE); 以上代码对话框资源释放的时候会崩溃,...
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vc/mfc *通配符 批量删除文件 - c++1y / stl - 清泛IT社区,为创新赋能!

...de &quot;stdafx.h&quot; #include &lt;windows.h&gt; int _tmain(int argc, _TCHAR* argv[]) { &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;LPTSTR delFileName = L&quot;c:/test/test*.txt&quot;; &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;SHFILEOPSTRUCT FileOp; &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;ZeroMemory((void*...
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nvarchar和varchar相互转换、联合查询 - ORACLE - 清泛IT论坛,有思想、有深度

...Oracle两张表,同一组字段的数据类型不一致,分别是nvarchar和varchar。 这时联合查询报错如下:ora12704:字符集不匹配。 解决方法:需要对数据类型进行转换。 Specifying the USING CHAR_CS argument converts text into the database character set. T...