Variable Declarations

In most languages, variables and their types must be declared before being used. In Scheme, local variables should always be declared in a let or let* surrounding the code that uses them.

In Pascal, variables are declared using a var declaration: var var : type ; In C++ and Java, the type precedes the variable name: type var ;

Scheme:	(let ((x 0.0) (y 0.0) (i 0) (c #\a)) ...)
Pascal:	var x, y: real; i:integer; c:char;
C++:	float x, y; int i; char c;
Java:	double x, y; long i; char c;

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