CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums
Results 1 to 11 of 11

Thread: File I/O

Threaded View

  1. #1
    Join Date
    Apr 2022

    File I/O

    I am trying to read a file into buffer as vector, and write it to another file. It reads the content, but doesn't seem to write. What is the mistake and how to correct ?

    #include <iostream>
    #include <fstream>
    #include <string>
    #include <vector>
     * It will iterate through all the lines in file and
     * put them in given vector
    bool getFileContent(std::string infileName, std::string outfileName, std::vector<std::string>& vecOfStrs)
        // Open the File to read the content into buffer
        std::ifstream in(infileName.c_str());
        // Check if object is valid
        if (!in)
            std::cerr << "Cannot open the File : " << infileName << std::endl;
            return false;
        std::string str;
        // Read the next line from File untill it reaches the end.
        while (std::getline(in, str))
            // Line contains string of length > 0 then save it in vector
            if (str.size() > 0)
        //Open the file to output the read buffer
        std::ofstream out(outfileName.c_str());
        if (!out) {
            std::cerr << "Write operation failed.";
            return false;
        /*while (in >> std::noskipws >> ch) {
            out << ch;
        //Iterate through the vector, and write it to the file 
        for (std::string& row : vecOfStrs) {
            out << row << std::endl;
        return true;
    int main()
        std::vector<std::string> vecOfStr;
        // Get the contents of file in a vector
        bool result = getFileContent("sample.txt", 
        if (result)
            // Print the vector contents
            std::cout << "Success! File read and write done";
    Last edited by perto1; April 10th, 2022 at 07:53 AM.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Click Here to Expand Forum to Full Width