CS G262 Assignment #5.
Assigned:  Thursday, 28 October 2004
Due:       Monday, 15 November 2004, by 6pm

Complete your quirk21 compiler by implementing a code generator
for the subset of quirk21 that is obtained by omitting:

    type declarations
    sum and product types
    char and float types
    array types (other than literals of type char[])
    assignments
    letrec expressions
    new expressions (for both array and sum/product types)
    case expressions
    field references
    array references
    char literals
    float literals
    all operations on char types
    all operations on float types
    all operations on array types

The initial environment used for type-checking should recognize
a standard library that consists of

    printString : (char[] -> void)
    printInt : (int -> void)
    printLine : ( -> void)

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