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hxh_d2s/Calculator/Calculator.sln

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hxh_d2s/Calculator/Calculator/Calculator.h

@@ -0,0 +1,18 @@
+//#include "stdafx.h"
+#include <stack>
+#include <vector>
+#include <iostream>
+#include "stdlib.h"
+#include <ctime>
+#include <string>  
+using namespace std;
+
+class Calculator 
+{
+private:
+	string op[4] = { "+", "-", "*", "/" };
+public:
+	Calculator();
+	string MakeFormula();
+	string Solve(string formula);
+};

hxh_d2s/Calculator/Calculator/Calculator.vcxproj

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hxh_d2s/Calculator/Calculator/Calculator.vcxproj.filters

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hxh_d2s/Calculator/Calculator/Calculator.vcxproj.user

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hxh_d2s/Calculator/Calculator/CalculatorConsole.cpp

@@ -0,0 +1,122 @@
+#include "pch.h"
+#include <stack>
+#include <vector>
+#include <iostream>
+#include "stdlib.h"
+#include <ctime>
+#include <string>
+#include "Calculator.h"
+#include <fstream>
+
+#define random(a,b) (rand()%(b-a+1)+a)
+
+using namespace std;
+
+Calculator::Calculator() {}
+
+string Calculator::MakeFormula() {
+	string formula = "";
+	int count = random(1, 3);
+	int start = 0;
+	int number1 = random(1, 100);
+	formula += to_string(number1);
+	while (start <= count) {
+		int operation = random(0, 3);
+		int number2 = random(1, 100);
+		formula += op[operation] + to_string(number2);
+		start++;
+	}
+	return formula;
+};
+
+string Calculator::Solve(string formula) {
+	vector<string>* tempStack = new vector<string>();
+	stack<char>* operatorStack = new stack<char>();
+	int len = formula.length();
+	int k = 0;
+	for (int j = -1; j < len - 1; j++) {
+		char formulaChar = formula[j + 1];
+		if (j == len - 2 || formulaChar == '+' || formulaChar == '-' ||
+			formulaChar == '*' || formulaChar == '/') {
+			if (j == len - 2) {
+				tempStack->push_back(formula.substr(k));
+			}
+			else {
+				if (k < j) {
+					tempStack->push_back(formula.substr(k, j + 1));
+				}
+				if (operatorStack->empty()) {
+					operatorStack->push(formulaChar);
+				}
+				else {
+					char stackChar = operatorStack->top();
+					if ((stackChar == '+' || stackChar == '-')
+						&& (formulaChar == '*' || formulaChar == '/')) {
+						operatorStack->push(formulaChar);
+					}
+					else {
+						tempStack->push_back(to_string(operatorStack->top()));
+						operatorStack->pop();
+						operatorStack->push(formulaChar);
+					}
+				}
+			}
+			k = j + 2;
+		}
+	}
+	while (!operatorStack->empty()) {
+		tempStack->push_back(string(1, operatorStack->top()));
+		operatorStack->pop();
+	}
+	stack<string>* calcStack = new stack<string>();
+	for (int i = 0; i < tempStack->size(); i++) {
+		string peekChar = tempStack->at(i);
+		if (peekChar != "+" && peekChar != "-"
+			&& peekChar != "/" && peekChar != "*") {
+			calcStack->push(peekChar);
+		}
+		else {
+			int a1 = 0;
+			int b1 = 0;
+			if (!calcStack->empty()) {
+				b1 = stoi(calcStack->top());
+				calcStack->pop();
+			}
+			if (!calcStack->empty()) {
+				a1 = stoi(calcStack->top());
+				calcStack->pop();
+			}
+			if (peekChar == "+") {
+				calcStack->push(to_string(a1 + b1));
+			}
+			else if (peekChar == "-") {
+				calcStack->push(to_string(a1 - b1));
+			}
+			else if (peekChar == "*") {
+				calcStack->push(to_string(a1 * b1));
+			}
+			else if (peekChar == "/") {
+				calcStack->push(to_string(a1 / b1));
+			}
+		}
+	}
+	return formula + "=" + calcStack->top();
+}
+
+int main()
+{
+	srand((unsigned int)time(NULL));
+	ofstream mycout("subject.txt");
+	int i, num;
+	Calculator* calc = new Calculator();
+	cin >> num;
+	for (i = 0; i < num; i++) {
+		string question = calc->MakeFormula();
+		cout << question << endl;
+		string ret = calc->Solve(question);
+		mycout << ret << endl;
+	}
+	getchar();
+}
+
+

hxh_d2s/Calculator/Calculator/Debug/Calculator.Build.CppClean.log

@@ -0,0 +1,3 @@
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+d:\study\软件工程\git\calculator\hxh_d2s\calculator\calculator\debug\vc141.pdb
+d:\study\软件工程\git\calculator\hxh_d2s\calculator\calculator\debug\calculator.tlog\cl.command.1.tlog