#include?“operationcalculate.h“
#include?
#include?
#include?

OperationCalculate::OperationCalculate（）
{

}

void?OperationCalculate::setOperationCalculateStr（QString?&strAbstractOperation?*abstractOperation）
{
????QString?operationCalculateStr;
????operationCalculateStr?=?str;

????str.clear（）;
????str.append（“\n“）;
????str.append（“=“）;

????//將獲取到的中綴表達式轉換成后綴表達式，使用后綴表達式進行求值
????infixConvertPostfix（operationCalculateStr）;
????qDebug（）?<????postFixOperation（operationCalculateStrabstractOperation）;
????//將計算的結果賦值給str并顯示到界面中
????//只有結果
????str.append（operationCalculateStr）;
}

//中綴表達式轉后綴表達式
void?OperationCalculate::infixConvertPostfix（QString?&str）
{
????QStack?operatorStack;
????QStringList?strList;
????QString?temp;

????operatorStack.clear（）;
????strList.clear（）;

????//首先將字符串進行切割
????for（int?i?=?0;i?????{
????????strList.append（str.mid（i1））;
????}

????//用于接受轉化的后綴表達式即接收棧的輸出
????str.clear（）;

????/*************中綴變后綴步驟****************/
????for（int?i?=?0;i?????{
????????temp?=?strList.at（i）;
????????//遇到左括號?壓棧
????????if（?!temp.compare（“（“）?）
????????{
????????????operatorStack.push（temp）;
????????}else?if（?!temp.compare（“）“））???????//遇到右括號出棧
????????{
????????????str.append（““）;
????????????//不接收右括號的輸出
????????????//判斷棧頂元素是否是左括號是左括號則停止出棧
????????????while（?operatorStack.top（）.compare（“（“）?）
????????????{
????????????????//接收除去左括號和右括號的輸出
????????????????str.append（operatorStack.pop（））;
????????????????str.append（““）;
????????????}

????????????//將左括號出棧不接收左括號輸出
????????????operatorStack.pop（）;

????????}else?if（?isOperator（temp）?）??????//操作符和運算數
????????{
????????????str.append（““）;
????????????//操作符之前先追加一個逗號，區分前后的兩個操作數
????????????//棧頂元素的優先級要高并且棧不為空
????????????while（?!operatorStack.isEmpty（）?&&?prePriority（operatorStack.top（）temp）?>?0?）
????????????{
????????????????//將棧頂元素出棧并接收
????????????????str.append（operatorStack.pop（））;
????????????????str.append（““）;
????????????}

????????????operatorStack.push（temp）;

????????}else???????//是操作數，直接輸出
????????{
????????????str.append（temp）;
????????}
????}

????//遇到負數的情況時，最后的數字后面沒有逗號
????if（str.right（1）?!=?““）
????{
????????str.append（““）;
????}
????//剩余的運算符出棧
????while（!operatorStack.isEmpty（））
????{
????????str.append（operatorStack.pop（））;
????????str.append（““）;
????}
}

//后綴表達式的運算
void?OperationCalculate::postFixOperation（QString?&strAbstractOperation?*abstractOperation）
{
????QStringList?strList;
????QStack?stackStr;
????QString?unaryOperate;
????QString?unaryNum;
????QString?temp;
????QString?result;

????strList?=?str.split（““）;
????str.clear（）;
????qDebug（）?<????while（strList.contains（““））
????{
????????strList.replace（strList.indexOf（““）“0“）;
????}

????if（?!strList.last（）.compare（“0“）?）
????{
????????strList.removeLast（）;
?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-12-13?09:29??Calculator\
?????文件?????????634??2015-12-11?18:10??Calculator\Calculator.pro
?????文件???????18233??2015-12-13?09:29??Calculator\Calculator.pro.user
?????文件?????????656??2015-12-13?09:30??Calculator\Readme.txt
?????目錄???????????0??2015-12-11?18:09??Calculator\Src\
?????目錄???????????0??2015-12-13?09:28??Calculator\Src\OperationCalculate\
?????文件??????????96??2015-12-11?18:10??Calculator\Src\OperationCalculate\OperationCalculate.pri
?????文件????????6852??2015-12-13?09:28??Calculator\Src\OperationCalculate\operationcalculate.cpp
?????文件?????????736??2015-12-13?09:26??Calculator\Src\OperationCalculate\operationcalculate.h
?????目錄???????????0??2015-12-13?09:11??Calculator\Src\OperationFunction\
?????文件?????????802??2015-12-13?09:09??Calculator\Src\OperationFunction\OperationFunction.pri
?????文件?????????551??2015-12-11?16:13??Calculator\Src\OperationFunction\abstractoperation.cpp
?????文件?????????409??2015-12-11?15:05??Calculator\Src\OperationFunction\abstractoperation.h
?????文件?????????220??2015-12-11?16:13??Calculator\Src\OperationFunction\operationadd.cpp
?????文件?????????306??2015-12-11?15:31??Calculator\Src\OperationFunction\operationadd.h
?????文件?????????201??2015-12-12?19:23??Calculator\Src\OperationFunction\operationcos.cpp
?????文件?????????220??2015-12-12?19:22??Calculator\Src\OperationFunction\operationcos.h
?????文件?????????311??2015-12-12?15:28??Calculator\Src\OperationFunction\operationdiv.cpp
?????文件?????????222??2015-12-11?14:12??Calculator\Src\OperationFunction\operationdiv.h
?????文件????????2266??2015-12-13?09:11??Calculator\Src\OperationFunction\operationfactory.cpp
?????文件????????1126??2015-12-13?09:11??Calculator\Src\OperationFunction\operationfactory.h
?????文件?????????182??2015-12-12?19:29??Calculator\Src\OperationFunction\operationln.cpp
?????文件?????????230??2015-12-12?19:29??Calculator\Src\OperationFunction\operationln.h
?????文件?????????184??2015-12-12?19:24??Calculator\Src\OperationFunction\operationlog.cpp
?????文件?????????239??2015-12-12?19:24??Calculator\Src\OperationFunction\operationlog.h
?????文件?????????220??2015-12-11?16:14??Calculator\Src\OperationFunction\operationmul.cpp
?????文件?????????220??2015-12-11?14:10??Calculator\Src\OperationFunction\operationmul.h
?????文件?????????205??2015-12-13?09:11??Calculator\Src\OperationFunction\operationpower.cpp
?????文件?????????251??2015-12-13?09:10??Calculator\Src\OperationFunction\operationpower.h
?????文件?????????203??2015-12-12?15:49??Calculator\Src\OperationFunction\operationsin.cpp
?????文件?????????220??2015-12-12?15:43??Calculator\Src\OperationFunction\operationsin.h
............此處省略21個文件信息