QByteArray is a class in Qt library that provides a platform-independent way of storing binary data. It provides various functions to handle manipulations of data such as appending data to the end of the array.
The syntax of the QByteArray append function is as follows:
void QByteArray::append(const char* data, int size)
In this example, we create a QByteArray object named arr and use the append function to add the strings "Hello" and "World" to the end. The qDebug function is used to print the value of arr which is "HelloWorld".
In this example, we create a char array named data and fill it with the letters "Hello". We then create a QByteArray object named arr and use the append function to add the contents of the data array to the end. The sizeof function is used to determine the size of the data array. The qDebug function is used to print the value of arr which is "Hello".
The package library used for this example is Qt library.
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