intmain(){ std::ofstream outputFile("output.txt");// 创建并打开 output.txt 文件进行写入 // 进行文件写入操作 outputFile<<"Hello, world!"<<std::endl; outputFile<<"This is a line of text."<<std::endl; outputFile.close();// 关闭文件 return0; } 在上述示例中,我们创建了一个名为outp...
int main() { int num1 = 10; double num2 = 3.14; std::string str = "Hello, World!"; storeParamsToFile("output.txt", num1, num2, str); return 0; } 上述代码将模板可变参数存储到名为"output.txt"的文件中。如果文件成功打开并写入参数,则文件中将包含"10 3.14 Hello, World!"的内...
此外,参考资料说它以“std::ios::ate”模式打开并同时寻求文件的末尾(简而言之,如果您在此模式下打开它并且什么都不做,它将处于与“std::ios::app”相同的状态),但“ofstream”不起作用,因此您可以按如下方式打开它。 std::ofstream ofs("file.txt", std::ios::ate | std::ios::in); 1. 在这里,“...
write(reinterpret_cast<char*>(&d), sizeof d); // binary output ostrm << 123 << "abc" << '\n'; // text output } // read back std::ifstream istrm(filename, std::ios::binary); double d; istrm.read(reinterpret_cast<char*>(&d), sizeof d); int n; std::string s; is...
std::ofstream os(theFileName.c_str()); assert(os.good()); os<<"Just for test "<<std::endl; os.close(); } intmain(intargc,char*argv[]) { std::stringstream ss; //remove the std::endl ss<<"test"<<1<<".txt"; Output(ss.str()); ...
voidOutput(conststd::string&theFileName) { std::ofstream os(theFileName.c_str()); assert(os.good()); os<<"Just for test "<<std::endl; os.close(); } intmain(intargc,char*argv[]) { std::stringstream ss; //remove the std::endl ...
#include <fstream> #include <iomanip> #include <iostream> int main() { std::ofstream fout("output.txt"); if (!fout.is_open()) { std::cerr << "Failed to open file." << std::endl; return 1; } float num = 3.1415926f; fout << ...
#include <fstream>#include <iostream>#include <string>intmain(){std::stringfilename="Test.b";{std::ofstreamostrm(filename, std::ios::binary);doubled=3.14;ostrm.write(reinterpret_cast<char*>(&d), sizeof d);// binary outputostrm<<123<<"abc"<<'\n';// text output}// read back...
Das Klassen-Template basic_ofstream implementiert High-Level-Output-Operationen auf dateibasierte Streams. Es lässt sich eine Datei-basierte streambuffer (std::basic_filebuf) mit dem High-Level-Schnittstelle (std::basic_ostream) . Original: The class template basic_ofstream implements high-level ...
fstreams既可以是输入流也可以是输出流。tellg()将返回输入位置，tellp()将告诉您输出位置。在附加到...