This lovely page of CISC181 students

// readUsersFromFile.cpp // P.Conrad, Spring 2005 // CISC181, A program to read usernames from a file instead of // from the command line. It is assumed that the file "usernames.txt" // is in the "current directory" at the time the program is invoked. // The output is still written to the screen. #include using std::cout; using std::cin; using std::flush; using std::endl; using std::cerr; #include // for reading directly from a disk file using std::ifstream; // input file stream using std::ofstream; // for the output file usernames.html int main(void) { // try to open an input file ifstream userInputFile("usernames.txt"); // open the file // test whether the file was opened correctly using the // overloaded ! operator; returns false if opening the file failed if (!userInputFile) { cerr << "usernames.txt file could not be opened" << endl; exit (-1); } ofstream htmlFile("usernames.html", ios::out); if (!htmlFile) { cerr << "usernames.html file could not be created" << endl; exit (-1); } // write out the header of the HTML file htmlFile << "\nThis lovely page of CISC181 students" << endl; const int MAX_USERNAME_LENGTH = 8; // restriction of 8 comes from Unix rules char username[MAX_USERNAME_LENGTH+1]; // +1 because of \0 int count = 0; // try to read first username from input file userInputFile >> username; // note: userInputFile in place of cin while (!userInputFile.eof()) // will stop at end of file, or at CTRL/D { count ++; // convert username into URL and print it out cout << " " << count << ") username:" << username << endl; // get the next username userInputFile >> username; } // a parting thought cout << "\nThere were " << count << " users in this file\n" << endl; return 0; }