#include <iostream>
#include <stack>
#include<windows.h>
#include <math.h>
using namespace std;
double inStack();
void calculate(stack<char>& Ope, stack<double>& Num);
void factorial(stack<double>& Num);
int priority(char ope_);
int main() {
cout<<" E";
Sleep(900);
cout<<"v";
Sleep(900);
cout<<"e";
Sleep(900);
cout<<"n";
Sleep(900);
cout<<"2";
Sleep(900);
cout<<"2";
Sleep(900);
cout<<"6";
Sleep(900);
cout<<"的";
Sleep(900);
cout<<"计";
Sleep(900);
cout<<"算";
Sleep(900);
cout<<"器 ";
Sleep(2000);
cout<<"版权归Even226所有"<<endl;
Sleep(1000);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(50);
cout<<">";
Sleep(1500);
cout<<"%99";
Sleep(1500);
cout<<"%99.5";
Sleep(1500);
cout<<"%99.9";
Sleep(3000);
cout<<"%100"<<endl;
Sleep(2000);
cout<<" 开始 "<<endl;
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_";
Sleep(400);
cout<<"_"<<endl;
Sleep(500);
cout<<" "<<endl;
char op;
double num1, num2;
Sleep(100);
cout << "请输入运算符 (+, -, *, /): ";
cin >> op;
cout << "请输入两个操作数(中间打空格): ";
cin >> num1 >> num2;
switch(op) {
case '+':
cout << num1 << " + " << num2 << " = " << num1 + num2;
break;
case '-':
cout << num1 << " - " << num2 << " = " << num1 - num2;
break;
case '*':
cout << num1 << " * " << num2 << " = " << num1 * num2;
break;
case '/':
if (num2 != 0)
cout << num1 << " / " << num2 << " = " << num1 / num2;
else
cout << "除数不能为零!!!";
break;
default:
cout << "无效的运算符!!!";
break;
}
return 0;
}