33 lines
969 B
C++
33 lines
969 B
C++
#include <QApplication>
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#include <QFileDialog>
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#include <QSemaphore>
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#include <QThread>
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#include <QTextStream> // Still needed for parsing the content
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#include <QDebug>
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#include <iostream>
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int main(int argc, char *argv[]) {
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QApplication app(argc, argv);
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auto fileContentReady = [](const QString &fileName, const QByteArray &fileContent) {
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if (fileName.isEmpty() || !QFile(fileName).exists()) {
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std::cerr << "Failed to open file" << std::endl;
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return;
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}
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QString contentStr(fileContent);
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QTextStream in(&contentStr);
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QString line = in.readLine();
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bool ok;
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int number = line.toInt(&ok);
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if (!ok) {
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std::cerr << "Failed to read integer from file content" << std::endl;
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return;
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}
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std::cout << number * 2 << std::endl;
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};
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QFileDialog::getOpenFileContent("All Files (*.*)", fileContentReady);
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} |