Beginning C# 7 Hands-On - The Core Language

Printing a variable

Now I will show you how to use this new feature. As in the previous chapter, I will enter the following, keeping things very simple:

double height = 65; //7. Creates and assigns a variable

In the next stage, let's say that you want to print a variable. To do so, enter the following command. Note that I have placed a dollar sign ($) on the right-hand side. In the context of string interpolation, the dollar sign has nothing to do with money. It is a symbol that is required to allow you to embed variable names directly into strings:

sampLabel.Text=$

Next, type double quotes and enter the following:

sampLabel.Text=$"Height is "

Unlike before when we had to type a plus sign (+) and the name of the variable, we can now just ...