72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Champlain College SDEV-340-81
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*
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* C++ Week 4: Assignment (second semester) - Advance File and I/O Operations (2020/06/07)
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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*
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* Working with File and I/O Operations
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* Advance File and I/O Operations - Chapter 13 (Page 911)
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* Programming Challenge (1. File Previewer) Display the first 10 lines of a file on the screen
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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*
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* Written by Llewellyn van der Merwe <llewellyn.vandermerw@mymail.champlain.edu>, June 2020
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* Copyright (C) 2020. All Rights Reserved
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* License GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include <iomanip>
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#include <iostream>
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#include <fstream>
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using namespace std;
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int main()
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{
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// file path
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string file_path;
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// get the file path
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cout << " Enter the file path to your file: ";
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while (true) {
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cin >> file_path;
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// get the file
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fstream file(file_path.c_str(), ios::in);
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// check if the file is open
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if (file.is_open()) {
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// the input string
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string line;
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// little counter
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int counter = 1;
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// get the fist line
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getline(file , line);
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while (file && counter < 11)
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{
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// we print the line number and the line
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cout << " " << setfill('0') << setw(2) << counter << "| " << line << endl;
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// get the next line
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getline(file , line);
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// count the lines
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counter++;
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}
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// check if we are at the end of the file
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if (!file)
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{
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// print this ending line notice that the whole file was displayed
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cout << "------------------------------------------------" << endl;
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cout << " The entire file was displayed above" << endl;
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cout << "------------------------------------------------" << endl;
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}
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// close the file
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file.close();
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break;
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} else {
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cout << endl;
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cout << " Woops! The file path (" << file_path << ") does not exist!" << endl;
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cout << " Please enter the correct file path to your file: ";
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}
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}
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return 0;
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}
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