text: #include <iostream>
  #include <string>
  
  #include "CExpressionParser.h"
  
  using std::cout;
  using std::endl;
  using std::string;
  
  
  int main()
  {
  	CParser::CExpressionParser parser;
  	string exp = "(1.345+(+2.22))*(3.5678-5.33/6.765)";
  	//string exp = "(1+2)*3*(4-5/6)";
  	bool result = parser.preprocess(exp);
  
  	cout << parser.getExp() << endl;
  	
  	parser.showStack();
  
  	cout << "itop" << endl;
  	parser.itop();
  
  	parser.showStack();
  
  	double tmp = parser.calc_exp_by_postfix();
  	cout << tmp << endl;
  
  	return 0;
  }