Give an EBNF definition of a simple programming language with these features:

1 Integer variables only

2 Variables must be declared before use (for example: int a, b, ...)

3 Identifiers are no longer than 8 alphanumeric characters; the first must be an alphabetic character

4 Integers are no longer than 10 digits with an optional sign

5 Assignment statements where variables are assigned the values of expressions(example A := C + 2)

6 An expression is an identifier, integer constant, or the sum, difference or product of two expressions

7 An expression can be placed in parentheses

8 All statements are separated by semicolons

9 A program ends with a period