How to work with texts in C++?

Question

Programming

The bottom line: you need to take the file, read everything from it (done), by clicking on the button, get 2 lines from 2 input fields (also done), find its mention in the first line in the file and through " " count everything further to the endline, respectively, this compare with the second read line and print a message.
Below is what my brain managed to give birth to.

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QFile>
#include <QString>
#include <QTextStream>
#include "iostream"

QString takeLog;
QString takePas;
QString aLine;



MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    getTextFile();
    on_pushButton_clicked();
}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_clicked()
{
    takeLog = ui->lineEdit->text();
    takePas = ui->lineEdit_2->text();
    if (aLine.contains(takeLog) == true)
    {
        int logLeng = takeLog.size();
        int indexLog = aLine.lastIndexOf(takeLog) + logLeng;     

    }
    else
    {
        printf("N");
    }

}

void MainWindow::getTextFile(){
    QFile accessFile("C:/Users/Kiaeru Sol'Nuem/Documents/FirstLoginWindow/FTAI.sp");
    accessFile.open(QIODevice::ReadOnly);

    QTextStream testStream(&accessFile);
    aLine = testStream.readAll();
    accessFile.close();
    ui->textEdit->setPlainText(aLine);

}

Answer 1

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