C# - Variables and Expressions

Variables : Declaring our two variables is very easy. Simply type the following lines of code:

int x;
int y;

"int" is the C# term for integer, a mathematical term referring to a number that has no fractions or decimal values. Remember -- our goal in declaring variables is to tell the .NET Framework Runtime to save a place in memory for our numeric values. After that we can access our variables.

Expression : Type the following code:

int x = 7;
string y = "Bob";
string myFirstTry = x + y;
Console.WriteLine(myFirstTry);
Console.ReadLine();

If you run the application, you'll see that the console window prints out 7Bob. This is correct, because seven plus Bob equals 7Bob.

Now, add the following code:

int mySecondTry = x + y;