write()The write(str, n) method writes n characters from the char array str into the file.char myStr[] = "Hello World!"; MyFile.write(myStr, 5);put()The put(c) method writes the specified character c into the file.char grade = 'B'; MyFile.put(grade);...
if (!outFile) { // 文件打开或写入失败 std::cerr << "Failed to open file or write to file." << std::endl; } else { // 文件成功打开并写入 std::cout << "File written successfully." << std::endl; } ...
在cpp文件中我有 代码语言:javascript 复制 #include"A.h"voidA::PrintToFile(){ofstreamf(path.c_str(),ios::out);assert(f.is_open);f<<"markuptext"<<endl;PrintBase();f<<"endtag"<<endl;f.close();}voidA::PrintBase(){ofstreamf(path.c_str(),ios::app);assert(f.is_open);f<<"ma...
结果写出的文件不可读,就是不正确。但是通过C风格代码却可以: FILE *pFile = fopen("D:\\stream.raw","a+"); fwrite(pStream,sizeof(unsignedchar), length, pFile); fclose(pFile); 问题出在哪里呢? 在Stack Overflow 中有这样的解释: In order to write raw binary data you have to useostream::wr...
=0x0){std::string strData=strWholeFileBuffer.substr(nLastIndex,i-nLastIndex);m_ofstreamHandle.write(strData.c_str(),strData.length());}nLastIndex=i;}else{bFindStartCode=true;}nLastIndex=i;i=i+3;}if((pTemp[i]==0x00)&&(pTemp[i+1]==0x00)&&(pTemp[i+2]==0x01)){if(bFind...
ofstream file ("example.bin", ios::out | ios::app | ios::binary); 两种打开文件的方式都是正确的。 你可以通过调用成员函数is_open()来检查一个文件是否已经被顺利的打开了: bool is_open(); 它返回一个布尔(bool)值,为真(true)代表文件已经被顺利打开,假( false )则相反。
close(); } else { SetDlgItemText(IDC_EXPORT, L"Export Unsuccessful! -- No File"); } } 有什么你们都可以想到的可能导致这种情况的吗?我已经花了几个小时尝试不同的东西,比如改用 myfile.write() 函数。我在这里、reddit 和谷歌搜索了很多,试图找出为什么这不是写作。 我感谢您的帮助。 编辑: 好...
] args) throws Exception { //1.创建流 FileOutputStream fos = new FileOutp ...
Output file failed to open because: Permission denied The simple code is below, can anyone give me a solution to this issue? I am using Visual c++ 2010 (yes its very old), I created an example.txt in C:\Users\ \Desktop\writetest\writetest ...
// 总计时间doublefileTotalTime=0;// 操作单个文件总时间doublewriteFileTime=0;// 单个文件单词写入时间totalTime=QDateTime::currentDateTime().toMSecsSinceEpoch()*1.0f;for(intloopIndex=0;loopIndex<loopTime;loopIndex++){QString filePath=QString("%1/%2_%3").arg(dirPath).arg(QDateTime::...