Question

I just started learning C++ in Qt and I was wondering how can I put a variables result in a string? I’m trying to use this for a simple application where someone puts their name in a text field then presses a button and it displays there name in a sentence. I know in objective-c it would be like,

NSString *name = [NSString stringWithFormatting:@"Hello, %@", [nameField stringValue]];
[nameField setStringValue:name];

How would I go about doing something like this with C++? Thanks for the help

Answer 1

You don´t mention what type your string is. If you are using the standard library then it would be something along the lines of

std::string name = "Hello, " + nameField;

That works for concatenating strings, if you want to insert other complex types you can use a stringstream like this:

std::ostringstream stream;
stream << "Hello, " << nameField;
stream << ", here is an int " << 7;

std::string text = stream.str();

Qt probably has its own string types, which should work in a similar fashion.