#include <iostream>#include <fstream>#include <string>// ...std::ifstream inputFile("file_with_data_in.txt");if (inputFile.fail()){    // things to do upon failure    // for example:    std::cerr << "Error: Could not open file_with_data_in.txt!\n\n";    system("pause");    return -1;}// Then you can use your ifstream object// just as you would std::cinstd::string word;while (inputFile >> word)     // get input word by word, skipping spaces, until end of file{    // do something with words}std::string line;while (std::getline(inputFile, line, '\n'))    // place all input in line until '\n' character is reached{    // do something with the line}// ...        

  #include <string>#include <fstream>#include <sstream>int main(){  std::ifstream ifs( "myfile.txt" );  std::istringstream iss;  std::string line;  int first;  std::string second;  char third;  std::getline( ifs, line );  iss.str( line );  iss.clear();  iss >> first;  std::getline( ifs, line );  iss.str( line );  iss.clear();  iss >> second;  std::getline( ifs, line );  iss.str( line );  iss.clear();  iss >> third;}