How we can store string in array format?

Mohit Tripathi

Suppose, we have
char arr[2]
arr[0]="abc" and arr[1]="mno" in C/C++.
How we can do in Qt same thing? I have read about QByteArray but here is nothing about the position about 0 or 1.
Could you please explain about it?

QByteArray Q_tex_val,Q_tex_val1;
QByteArray output1 = ui->lineEdit->text();
int n=output1.size();
int n1=output2.size();
QByteArray value =output1.data()[n-1];
QByteArray value1 =output2.data()[n1-1];
    for(int i=0;i<n;i++)
        {
            QByteArray value  =output1.data()[i];
            Q_tex_val=value.toUtf8();
            arduino->write(Q_tex_val.toStdString().c_str());
            arduino->flush();
            QThread::msleep(1000);
            arduino->waitForBytesWritten(100);
        }

It is giving the error because the I am taking the data in form of string from Line text edit.
Is there any way we can store the string in particular array?

ambershark

@Mohit-Tripathi You'll have to be a bit clearer on your question. The c++ you listed would cause an access violation since you are overstepping your bounds on both arr[0] = "abc" and arr[1]="mno".

Are you asking how to store an array of strings? If so you could use a QList<QString>. But again I'm not quite sure what the question is. Rephrase it or clarify a bit and I'm sure I or someone else could help.

EDIT: I replied before your edit adding the code ... so what is the actual error you are getting?

Mohit Tripathi

@ambershark
The error is conversion from 'QString' to non-scalar type 'QByteArray' requested.

QByteArray output1 = ui->lineEdit->text();

I know that I am getting the data in string format but I want to store this particular data into particular Array position.

aha_1980

@Mohit-Tripathi said in How we can store string in array format?:

@ambershark
The error is conversion from 'QString' to non-scalar type 'QByteArray' requested.

QByteArray output1 = ui->lineEdit->text();

I know that I am getting the data in string format but I want to store this particular data into particular Array position.

You should probably read up a bit about the differences between QString and QByteArray. QString is an 16-Bit Unicode string, while QByteArray is 8-bit, like char[].

When you convert from QString to QByteArray, you need to specify the encoding your byte array should have afterwards. Depending on that, you can e.g. use QString::toLatin1() or QString::toUtf8(). If you need other encodings, you should look up QTextStream.

Hope that clarifies it a bit.

Regards