main.cpp

把中缀表达式转换为后缀表达后

#include "Expression.h"

int main() {
	Expression e;
	string infix;
    cin>>infix;
	infix=infix+'=';
	e.infix_to_postfix(infix);
	cout<<"表达式的结果:"<<e.calculate_postfix()<<endl;
	return 0;
}