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computer science

sharon
sharon 


programming Attachments Tags
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Computer Science

felo
felo 



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And(Expression* left, Expression* right): SubExpression(left, right)

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class Divide: public SubExpression { public: Divide(Expression* left,

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} double evaluate() { return left->evaluate()

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class Expression {

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Expression* right): SubExpression(left, right) { }

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right) { } double evaluate()

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class Literal: public Operand { public: Literal(int value)

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{ public: Minus(Expression* left, Expression* right): SubExpression(left,

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= " << expression->evaluate() << endl; return 0; } void parseAssignments() { char assignop, delimiter; string variable; double value; do { variable = parseName();

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public SubExpression { public: Negation(Expression* left):

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"operand.h" #include "variable.h" #include "literal.h" #include "parse.h" Expression* Operand::parse() { char paren; double value; cin >> ws; if (isdigit(cin.peek()))

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static Expression*

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} double evaluate() { return

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<string> using namespace std; #include "parse.h" string parseName() { char alnum;

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Plus(Expression* left, Expression* right): SubExpression(left, right) {

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':') { first = left; second = right; left = Operand::parse(); cin >> operation; right = Operand::parse(); if (operation == '?') { third = right; isTernary = true; } } cin >> paren; if (isTernary ==

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Expression* left; Expression* right; Expression* first; Expression* second;

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void SymbolTable::insert(string variable, double value) { const Symbol& symbol = Symbol(variable, value);

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const; private: struct Symbol { Symbol(string variable, double value) { this->variable

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} double evaluate() { return third->evaluate() ?

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right) { } double evaluate()

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extern SymbolTable symbolTable; double Variable::evaluate() {

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Operand { public: Variable(string name)

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