Task

Demonstrate a language's methods of:

   variable declaration
   initialization
   assignment
   datatypes
   scope 
   referencing,     and 
   other variable related facilities


add_var(v1);
dim(v1);
add_var(v1, v2, v3, v4);
dim(v1, v2, v3, v4);
add_var(isRaining)_datatype(boolean);
dim(isRaining)_datatype(boolean);
add_var(greeting)_dt(string);
dim(greeting)_dt(string);
add_var({date}, birthdate);
dim({date}, birthdate);