public Answer GetAnswer(Question question, int userAnswer)
{
int rightAnswer = 0; //正确答案
string answerStatusString; //答题状态字符串
string questionString; //问题字符串
//根据生成的问题中的不同的运算符，计算问题的正确答案
switch (question.OperatorString)
{
case "+":
rightAnswer = question.Operand1 + question.Operand2;
break;
case "-":
rightAnswer = question.Operand1 - question.Operand2;
break;
case "*":
rightAnswer = question.Operand1*question.Operand2;
break;
case "/":
rightAnswer = question.Operand1/question.Operand2;
break;
default:
break;
}
//答题记录中的问题字符串（如 “10 + 32”）
questionString = question.Operand1 + " " + question.OperatorString + " " + question.Operand2;
//通过判断用户答案与正确答案是否一致，来设置答题状态为“√”还是“×”
if (userAnswer == rightAnswer)
{
answerStatusString = "√";
}
else
{
answerStatusString = "×";
}
Answer answer = new Answer(); //创建一个答题记录对象（Answer对象）
answer.QuestionString = questionString;
answer.RightResult = rightAnswer;
answer.UserAnswer = userAnswer;
answer.Status = answerStatusString;
return answer; //返回answer对象
}
public Question GetQuestion()
{
Question question = new Question(); //创建一个Question类型的对象
question.Operand1 = GenerateOperand(); //随机生成操作数1
question.Operand2 = GenerateOperand(); //随机生成操作数2
question.OperatorString = GenerateOperatorString(); //随机生成运算符
return question; //返回question对象
}