String operations, printing to stdout

[Cruz]

I'm not very fit with the QString class. I need to build a string representation of data which is a mixture of text and data. Is there a more elegant way than doing this?

QString string;
QString temp;
QList<float> angles;
 
string = "data starts here: ";
for (int i = 0; i <angles->size(); i++)
{
	temp.sprintf("\t%.2f", angles.at(i));
	string.append(temp);
}

QString string;
QString temp;
QList<float> angles;

string = "data starts here: ";
for (int i = 0; i <angles->size(); i++)
{
	temp.sprintf("\t%.2f", angles.at(i));
	string.append(temp);
}

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And then what's the best way to print this string to stdout? All I know is printf from C and I can't get that to work with Qstring.

Thanks
Cruz