29 lines
744 B
C++
29 lines
744 B
C++
#ifndef __EXPMAN_H__
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#define __EXPMAN_H__
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#include <iostream>
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#include <stack>
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#include <vector>
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#include <cstdlib>
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#include <sstream>
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#include <string>
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#include "ExpressionManagerInterface.h"
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using namespace std;
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class expman : public ExpressionManagerInterface {
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public:
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bool isBalanced(string expression);
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string postfixToInfix(string postfixExpression);
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string infixToPostfix(string infixExpression);
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string postfixEvaluate(string postfixExpression);
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};
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int precedence(string ch);
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bool is_paren(string token);
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bool is_int(string token);
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bool is_valid_expression(string token);
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bool is_valid_token(string token);
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stack<string> reverse_stack(stack<string>);
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stack<string> parse_expression(string);
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#endif
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