std::ios::in|std::ios::out);// 打开文件用于读写if(file){std::stringline;std::stringsearch...
As I understand once you start using the object fs for insertion you cannot read from it unless you explicitly close it and reopen. fs.open("xx.txt", std::fstream::in | std::fstream::out); std::string line; while(std::getline(fs, line)) { std::cout << line << std::endl; }...
ios_base::in);if(myFile.is_open())cout<<"open is ok "<<endl;string fileTxt;while(myFile.good()){getline(myFile,fileTxt);cout<<fileTxt<<endl;}cout<<"Finished"<
使用std::fstream 读取文件内容时,可以使用流提取运算符(>>)或 getline 方法。 cpp #include <iostream> #include <fstream> #include <string> int main() { std::fstream file("example.txt", std::ios::in); if (!file.is_open()) { std::cerr << "Faile...
string fileContents;while(myFile.good())//判断当前流的状态是否正常。即当读到文件末尾时,自动跳出循环。{getline(myFile, fileContents);//每次从文件中读取一行cout<<fileContents<<endl;} myFile.close();}elsecout<<"打开文件失败,检查文件是否在正确的目录下!"<<endl;return0;} ...
vs低版本转高版本，std::getline报错，如下 提示 error C2027: 使用了未定义类型“std::basic_i...
getline 持续提取字符,直到找到给定字符 (std::basic_istream<CharT,Traits>的公开成员函数) ignore 持续提取并丢弃字符,直到找到给定字符 (std::basic_istream<CharT,Traits>的公开成员函数) read 按区块提取字符 (std::basic_istream<CharT,Traits>的公开成员函数) ...
for(string key,value;in1>>key && getline(in1,value);){ if (value.size()>1) transword[key]=value.substr(1); } for(string text,word;getline(in2,text);){ for(istringstream iss(text);iss>>word;) { if(transword.find(word)==transword.end()){ ...
outfile.open("gfg.dat");cout<<"Writing to the file"<<endl;cout<<"Enter your name:";// This function will take the entire// the user enters and will store in// the "data" array declare abovecin.getline(data,100);// Write inputted data into// the file.outfile << data <<endl;/...
getline extracts characters until the given character is found (public member function of std::basic_istream<CharT,Traits>) ignore extracts and discards characters until the given character is found (public member function of std::basic_istream<CharT,Traits>) read extracts blocks of cha...