MyNumber OneStepCalculate(MyNumber num1, MyNumber num2, int opera)
{
if (opera == 101)
{
return(num1 + num2);
}
else if (opera == 102)
{
return(num1 - num2);
}
else if (opera == 103)
{
return(num1 * num2);
}
else if (opera == 104)
{
return(num1 / num2);
}
else if (opera == 105)
{
return(num1 ^ num2);
}
else
{
MyNumber error = new MyNumber(-1);
return(error);
}
}
/*要求用户输入答案并与结果比较*/
public int GetResult(MyNumber res, string yourans)
{
int formflag = CheckYourAnswer(yourans); //判断答案格式是否正确
if (formflag == 1)
{
//sign代表答案符号，ansnum[0]为分子，[1]为分母
int[] ansnum = new int[] { 0, 1 };
int sign = TurnToNumber(yourans, ansnum);
if (ansnum[1] != 0) //判断分母是否为0
{
MyNumber yourres = new MyNumber(ansnum[0], ansnum[1], sign);
if (yourres == res)
{
return(1);
}
//cout << "Right" << endl;
else
{
return(0);
}
//cout << "Wrong" << endl;
}
else
{
return(0);
}
}
else
{
return(3);
}
}
public static MyNumber operator +(MyNumber a, MyNumber b)
{
MyNumber c = new MyNumber();
c.numerator = a.numerator * b.denominator + a.denominator * b.numerator;
c.denominator = a.denominator * b.denominator;
return(c);
}
public static MyNumber operator ^(MyNumber a, MyNumber b)
{
MyNumber c = new MyNumber(1);
for (int i = 0; i < b.numerator; i++)
{
c = c * a;
}
return(c);
}
public static MyNumber operator /(MyNumber a, MyNumber b)
{
MyNumber c = new MyNumber
{
numerator = a.numerator * b.denominator,
denominator = a.denominator * b.numerator
};
return(c);
}
private void button2_Click(object sender, EventArgs e)
{
if (ansText.Text == "")
{
ansText.Focus();
return;
}
Ans ans = new Ans();
MyNumber correctAnswer = calculate.GetAns(save, build.p);
int ansflag = ans.GetResult(correctAnswer, this.ansText.Text);
string correctAnswerStr = correctAnswer.M_ToString();
if (ansflag == 1)
{
timer1.Stop();
MessageBox.Show("Accepted!\n");
timer1.Start();
score++;
scoreText.Text = "得分：" + score.ToString();
button1_Click(null, null);
this.ansText.Text = "";
totalTime = 20;
}
else if (ansflag == 0)
{
timer1.Stop();
MessageBox.Show("WrongAnswer\n" + "Correct Answer:" + correctAnswerStr);
timer1.Start();
chance = chance - 1;
if (chance <= 0)
{
MessageBox.Show("错误次数过多！");
Application.Exit();
}
hp.Text = "剩余次数" + chance.ToString();
button1_Click(null, null);
this.ansText.Text = "";
totalTime = 20;
}
else
{
timer1.Stop();
MessageBox.Show("输入格式有误！");
timer1.Start();
this.ansText.Text = "";
this.ansText.Focus();
}
record.Text += build.M_ToString() + "=" + correctAnswerStr + "\r\n";//保存历史记录
}
public MyNumber GetAns(int[] operation, int length)
{
/*将四则运算映射到一串十进制数，0-100为运算数，
* 101-104分别代表+，-，*，/，105为乘方，106为左括号,107为右括号*/
Stack <int> operators = new Stack <int>();
Stack <MyNumber> operand = new Stack <MyNumber>();
for (int i = 0; i < length; i++)
{
if (operation[i] >= 0 && operation[i] <= 100)
{
MyNumber temp = new MyNumber(operation[i]);
operand.Push(temp);
}
else if (operation[i] == 105 || operation[i] == 106) //左括号与乘方必定入栈
{
operators.Push(operation[i]);
}
else if (operation[i] == 103 || operation[i] == 104) //乘除会弹出乘方与乘除
{
while (operators.Count != 0 && (operators.Peek() == 103 || operators.Peek() == 104 || operators.Peek() == 105))
{
int opera = operators.Pop();
//operators.Pop();
MyNumber num1 = operand.Pop();
//operand.Pop();
MyNumber num2 = operand.Pop();
//operand.Pop();
operand.Push(OneStepCalculate(num2, num1, opera));
}
operators.Push(operation[i]);
}
else if (operation[i] == 101 || operation[i] == 102) //加减可能弹出乘除与乘方
{
while (operators.Count != 0 && (operators.Peek() != 106 && operators.Peek() != 107))
{
int opera = operators.Pop();
//operators.pop();
MyNumber num1 = operand.Pop();
//operand.pop();
MyNumber num2 = operand.Pop();
//operand.pop();
operand.Push(OneStepCalculate(num2, num1, opera));
}
operators.Push(operation[i]);
}
else if (operation[i] == 107) //右括号会一直弹出直至左括号
{
while (operators.Peek() != 106)
{
int opera = operators.Pop();
//operators.pop();
MyNumber num1 = operand.Pop();
//operand.Pop();
MyNumber num2 = operand.Pop();
//operand.pop();
operand.Push(OneStepCalculate(num2, num1, opera));
}
operators.Pop();
}
}
while (operators.Count != 0)
{
int opera = operators.Pop();
//operators.Pop();
MyNumber num1 = operand.Pop();
//operand.Pop();
MyNumber num2 = operand.Pop();
//operand.pop();
operand.Push(OneStepCalculate(num2, num1, opera));
}
return(operand.Pop());
}
