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project10 - template

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Sean O'Connor
2025-11-09 14:14:30 -05:00
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38
10/ArrayTest/Main.jack Normal file
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// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/10/ArrayTest/Main.jack
// (same as projects/9/Average/Main.jack)
/** Computes the average of a sequence of integers. */
class Main {
function void main() {
var Array a;
var int length;
var int i, sum;
let length = Keyboard.readInt("HOW MANY NUMBERS? ");
let a = Array.new(length);
let i = 0;
while (i < length) {
let a[i] = Keyboard.readInt("ENTER THE NEXT NUMBER: ");
let i = i + 1;
}
let i = 0;
let sum = 0;
while (i < length) {
let sum = sum + a[i];
let i = i + 1;
}
do Output.printString("THE AVERAGE IS: ");
do Output.printInt(sum / length);
do Output.println();
return;
}
}

286
10/ArrayTest/Main.xml Normal file
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<class>
<keyword> class </keyword>
<identifier> Main </identifier>
<symbol> { </symbol>
<subroutineDec>
<keyword> function </keyword>
<keyword> void </keyword>
<identifier> main </identifier>
<symbol> ( </symbol>
<parameterList>
</parameterList>
<symbol> ) </symbol>
<subroutineBody>
<symbol> { </symbol>
<varDec>
<keyword> var </keyword>
<identifier> Array </identifier>
<identifier> a </identifier>
<symbol> ; </symbol>
</varDec>
<varDec>
<keyword> var </keyword>
<keyword> int </keyword>
<identifier> length </identifier>
<symbol> ; </symbol>
</varDec>
<varDec>
<keyword> var </keyword>
<keyword> int </keyword>
<identifier> i </identifier>
<symbol> , </symbol>
<identifier> sum </identifier>
<symbol> ; </symbol>
</varDec>
<statements>
<letStatement>
<keyword> let </keyword>
<identifier> length </identifier>
<symbol> = </symbol>
<expression>
<term>
<identifier> Keyboard </identifier>
<symbol> . </symbol>
<identifier> readInt </identifier>
<symbol> ( </symbol>
<expressionList>
<expression>
<term>
<stringConstant> HOW MANY NUMBERS? </stringConstant>
</term>
</expression>
</expressionList>
<symbol> ) </symbol>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
<letStatement>
<keyword> let </keyword>
<identifier> a </identifier>
<symbol> = </symbol>
<expression>
<term>
<identifier> Array </identifier>
<symbol> . </symbol>
<identifier> new </identifier>
<symbol> ( </symbol>
<expressionList>
<expression>
<term>
<identifier> length </identifier>
</term>
</expression>
</expressionList>
<symbol> ) </symbol>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
<letStatement>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<expression>
<term>
<integerConstant> 0 </integerConstant>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
<whileStatement>
<keyword> while </keyword>
<symbol> ( </symbol>
<expression>
<term>
<identifier> i </identifier>
</term>
<symbol> &lt; </symbol>
<term>
<identifier> length </identifier>
</term>
</expression>
<symbol> ) </symbol>
<symbol> { </symbol>
<statements>
<letStatement>
<keyword> let </keyword>
<identifier> a </identifier>
<symbol> [ </symbol>
<expression>
<term>
<identifier> i </identifier>
</term>
</expression>
<symbol> ] </symbol>
<symbol> = </symbol>
<expression>
<term>
<identifier> Keyboard </identifier>
<symbol> . </symbol>
<identifier> readInt </identifier>
<symbol> ( </symbol>
<expressionList>
<expression>
<term>
<stringConstant> ENTER THE NEXT NUMBER: </stringConstant>
</term>
</expression>
</expressionList>
<symbol> ) </symbol>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
<letStatement>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<expression>
<term>
<identifier> i </identifier>
</term>
<symbol> + </symbol>
<term>
<integerConstant> 1 </integerConstant>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
</statements>
<symbol> } </symbol>
</whileStatement>
<letStatement>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<expression>
<term>
<integerConstant> 0 </integerConstant>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
<letStatement>
<keyword> let </keyword>
<identifier> sum </identifier>
<symbol> = </symbol>
<expression>
<term>
<integerConstant> 0 </integerConstant>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
<whileStatement>
<keyword> while </keyword>
<symbol> ( </symbol>
<expression>
<term>
<identifier> i </identifier>
</term>
<symbol> &lt; </symbol>
<term>
<identifier> length </identifier>
</term>
</expression>
<symbol> ) </symbol>
<symbol> { </symbol>
<statements>
<letStatement>
<keyword> let </keyword>
<identifier> sum </identifier>
<symbol> = </symbol>
<expression>
<term>
<identifier> sum </identifier>
</term>
<symbol> + </symbol>
<term>
<identifier> a </identifier>
<symbol> [ </symbol>
<expression>
<term>
<identifier> i </identifier>
</term>
</expression>
<symbol> ] </symbol>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
<letStatement>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<expression>
<term>
<identifier> i </identifier>
</term>
<symbol> + </symbol>
<term>
<integerConstant> 1 </integerConstant>
</term>
</expression>
<symbol> ; </symbol>
</letStatement>
</statements>
<symbol> } </symbol>
</whileStatement>
<doStatement>
<keyword> do </keyword>
<identifier> Output </identifier>
<symbol> . </symbol>
<identifier> printString </identifier>
<symbol> ( </symbol>
<expressionList>
<expression>
<term>
<stringConstant> THE AVERAGE IS: </stringConstant>
</term>
</expression>
</expressionList>
<symbol> ) </symbol>
<symbol> ; </symbol>
</doStatement>
<doStatement>
<keyword> do </keyword>
<identifier> Output </identifier>
<symbol> . </symbol>
<identifier> printInt </identifier>
<symbol> ( </symbol>
<expressionList>
<expression>
<term>
<identifier> sum </identifier>
</term>
<symbol> / </symbol>
<term>
<identifier> length </identifier>
</term>
</expression>
</expressionList>
<symbol> ) </symbol>
<symbol> ; </symbol>
</doStatement>
<doStatement>
<keyword> do </keyword>
<identifier> Output </identifier>
<symbol> . </symbol>
<identifier> println </identifier>
<symbol> ( </symbol>
<expressionList>
</expressionList>
<symbol> ) </symbol>
<symbol> ; </symbol>
</doStatement>
<returnStatement>
<keyword> return </keyword>
<symbol> ; </symbol>
</returnStatement>
</statements>
<symbol> } </symbol>
</subroutineBody>
</subroutineDec>
<symbol> } </symbol>
</class>

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10/ArrayTest/MainT.xml Normal file
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<tokens>
<keyword> class </keyword>
<identifier> Main </identifier>
<symbol> { </symbol>
<keyword> function </keyword>
<keyword> void </keyword>
<identifier> main </identifier>
<symbol> ( </symbol>
<symbol> ) </symbol>
<symbol> { </symbol>
<keyword> var </keyword>
<identifier> Array </identifier>
<identifier> a </identifier>
<symbol> ; </symbol>
<keyword> var </keyword>
<keyword> int </keyword>
<identifier> length </identifier>
<symbol> ; </symbol>
<keyword> var </keyword>
<keyword> int </keyword>
<identifier> i </identifier>
<symbol> , </symbol>
<identifier> sum </identifier>
<symbol> ; </symbol>
<keyword> let </keyword>
<identifier> length </identifier>
<symbol> = </symbol>
<identifier> Keyboard </identifier>
<symbol> . </symbol>
<identifier> readInt </identifier>
<symbol> ( </symbol>
<stringConstant> HOW MANY NUMBERS? </stringConstant>
<symbol> ) </symbol>
<symbol> ; </symbol>
<keyword> let </keyword>
<identifier> a </identifier>
<symbol> = </symbol>
<identifier> Array </identifier>
<symbol> . </symbol>
<identifier> new </identifier>
<symbol> ( </symbol>
<identifier> length </identifier>
<symbol> ) </symbol>
<symbol> ; </symbol>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<integerConstant> 0 </integerConstant>
<symbol> ; </symbol>
<keyword> while </keyword>
<symbol> ( </symbol>
<identifier> i </identifier>
<symbol> &lt; </symbol>
<identifier> length </identifier>
<symbol> ) </symbol>
<symbol> { </symbol>
<keyword> let </keyword>
<identifier> a </identifier>
<symbol> [ </symbol>
<identifier> i </identifier>
<symbol> ] </symbol>
<symbol> = </symbol>
<identifier> Keyboard </identifier>
<symbol> . </symbol>
<identifier> readInt </identifier>
<symbol> ( </symbol>
<stringConstant> ENTER THE NEXT NUMBER: </stringConstant>
<symbol> ) </symbol>
<symbol> ; </symbol>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<identifier> i </identifier>
<symbol> + </symbol>
<integerConstant> 1 </integerConstant>
<symbol> ; </symbol>
<symbol> } </symbol>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<integerConstant> 0 </integerConstant>
<symbol> ; </symbol>
<keyword> let </keyword>
<identifier> sum </identifier>
<symbol> = </symbol>
<integerConstant> 0 </integerConstant>
<symbol> ; </symbol>
<keyword> while </keyword>
<symbol> ( </symbol>
<identifier> i </identifier>
<symbol> &lt; </symbol>
<identifier> length </identifier>
<symbol> ) </symbol>
<symbol> { </symbol>
<keyword> let </keyword>
<identifier> sum </identifier>
<symbol> = </symbol>
<identifier> sum </identifier>
<symbol> + </symbol>
<identifier> a </identifier>
<symbol> [ </symbol>
<identifier> i </identifier>
<symbol> ] </symbol>
<symbol> ; </symbol>
<keyword> let </keyword>
<identifier> i </identifier>
<symbol> = </symbol>
<identifier> i </identifier>
<symbol> + </symbol>
<integerConstant> 1 </integerConstant>
<symbol> ; </symbol>
<symbol> } </symbol>
<keyword> do </keyword>
<identifier> Output </identifier>
<symbol> . </symbol>
<identifier> printString </identifier>
<symbol> ( </symbol>
<stringConstant> THE AVERAGE IS: </stringConstant>
<symbol> ) </symbol>
<symbol> ; </symbol>
<keyword> do </keyword>
<identifier> Output </identifier>
<symbol> . </symbol>
<identifier> printInt </identifier>
<symbol> ( </symbol>
<identifier> sum </identifier>
<symbol> / </symbol>
<identifier> length </identifier>
<symbol> ) </symbol>
<symbol> ; </symbol>
<keyword> do </keyword>
<identifier> Output </identifier>
<symbol> . </symbol>
<identifier> println </identifier>
<symbol> ( </symbol>
<symbol> ) </symbol>
<symbol> ; </symbol>
<keyword> return </keyword>
<symbol> ; </symbol>
<symbol> } </symbol>
<symbol> } </symbol>
</tokens>