Variable declarations

Every variable requires a type and an identifier. You must declare and initialize every variable that you use in BI#. A variable declaration has this structure:

<type> <name> = <expression>;

Valid variable declarations are, for example:

int number = 42;
string message = "Hello, world!";

These variable declarations are invalid:

int number; // No initialization.
string test = 42; // Initializer has wrong type.