What are the methods for converting strings in Qt?

There are several methods for converting strings in Qt.

1. Convert a QString to a std::string using the toStdString() method.
2. Convert a QString to a QByteArray using the toUtf8() method, and then convert it to const char* using the constData() method of QByteArray.
3. Use the toLatin1() method of QString to convert QString to QByteArray, and use the constData() method of QByteArray to convert it to const char*.
4. Convert a QString to basic data types such as integer and floating point by using the methods toInt() and toDouble().
5. Convert a QByteArray to std::string using the toStdString() method.
6. Convert a QByteArray to a const char* using the constData() method.
7. Convert a std::string to a QString using QString::fromStdString().
8. Convert the const char* to a QByteArray using QByteArray’s fromRawData() function.
9. Convert basic data types such as integers and floats to QString using QString::number().
10. Convert the const char* to a QString using QString::fromLatin1().

The above are some common methods for converting strings, and the appropriate method can be chosen based on specific needs.