我的多项选择计划似乎遇到了一些麻烦。我似乎无法弄清楚如何在while循环中进行尝试。例如，我给你两次尝试，让我们说你的第一个问题是错误的。然后它会再次尝试同一个问题。我想我需要使用while循环，我似乎无法弄清楚如何实现它。另外，有没有一种方法可以重新启动程序，如果不是100？
string First;
int score = 0;
string Second;
TextInfo textInfo = new CultureInfo("en-US", false).TextInfo;
Console.Write("Where is the capital of the state of Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa");
First = Console.ReadLine();
switch (First)
{
case "B":
Console.WriteLine("You entered the correct answer!");
break;
case "A":
Console.WriteLine("You entered the wrong answer.");
break;
case "C":
Console.WriteLine("You entered the wrong answer.");
break;
case "D":
Console.WriteLine("You entered the wrong answer.");
break;
default:
Console.WriteLine("You did not enter a correct answer.");
break;
}
if (First == "B")
{
score = score + 50;
Console.WriteLine("Correct!\n" + " score:" + score + "\n");
}
else
{
Console.WriteLine("Wrong!\n" + " score:" + score + "\n");
}
Console.Write("Where is Walt Disney World Park located in Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa");
Second = Console.ReadLine();
switch (Second)
{
case "A":
Console.Write("You entered the correct answer!");
break;
case "B":
Console.WriteLine("You entered the wrong answer.");
break;
case "C":
Console.WriteLine("You entered the wrong answer.");
break;
case "D":
Console.WriteLine("You entered the wrong answer.");
break;
default:
Console.WriteLine("You did not enter a correct answer.");
break;
}
if (Second == "A")
{
score = score + 50;
Console.WriteLine("Correct!\n" + " score:" + score + "\n");
}
else
{
Console.WriteLine("Wrong!\n" + " score:" + score + "\n");
}
答案 0 :(得分：1)
改变你检查正确答案的方法将有助于使你想要做的更清楚。我建议上课来提问问题：
class Question
{
public string Text { get; private set; }
public string Answer { get; private set; }
public Question(string text, string answer)
{
Text = text;
Answer = answer;
}
}
然后，您可以创建问题列表，而不是需要为每个问题创建大型分支结构：
List<Question> questions = new List<Question>();
questions.Add(new Question("Where is the capital of...", "B"));
questions.Add(new Question("Where is Walt Dis...", "A"));
现在提问，你可以遍历你的清单。添加第二次机会功能也很容易：
foreach (Question question in questions)
{
bool answeredCorrectly = false;
for (int i = 0; i < 2; ++i) // up to 2 chances
{
Console.Write(question.Text);
string answer = Console.ReadLine();
if (answer == question.Answer)
{
Console.WriteLine("You answered correctly!");
answeredCorrectly = true;
break; // Make sure we break out of the for loop so we don't ask a second time
}
else
{
Console.WriteLine("That's not correct.");
}
}
if (answeredCorrectly)
{
// Add 50 points to their score, etc.
}
}
答案 1 :(得分：1)
你可以像这样编写while循环
while (score!=50) {
// Do stuff
}
该程序是如何编写的
static void Main(string[] args) {
string First; //You should use a char
int score = 0;
string Second;
//TextInfo textInfo = new CultureInfo("en-US", false).TextInfo;
Console.Write("Where is the capital of the state of Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa");
// Here is the while loop
// While score is not 50 do stuff
while (score!=50) {
First = Console.ReadLine();
score = checkanswer(First, "B", 50, score);
}
Console.Write("Where is Walt Disney World Park located in Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa");
while (score != 100) { Second = Console.ReadLine();
score = checkanswer(Second, "A", 50, score);
}
}
// I added this little fancy function. It makes your program more structured and a little bit smaller ;)
static int checkanswer(string userinput, string rightanswer, int winpoints, int score){
if (userinput==rightanswer) {
Console.WriteLine("You entered the wrong answer.\n");
Console.WriteLine("Correct!\n" + " score:" + winpoints + score + "\n");
return winpoints + score;
} else {
Console.WriteLine("You entered the wrong answer.\n");
Console.WriteLine("Wrong!\n" + " score:" + score + "\n");
return score;
}
}
答案 2 :(得分：0)
bool Ask(string question, string answer, int attempts)
{
Console.WriteLine(question);
for (int i = 0; i < attempts; i++)
{
string input = Console.ReadLine().ToLower();
if (input == answer)
{
Console.WriteLine("Correct!");
return true;
}
Console.WriteLine("Incorrect.");
}
return false;
}
static void Main()
{
int score = 0;
if (Ask("Where is Walt Disney World Park located in Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa", "B", 3))
{
score += 50;
}
else
{
score -= 50;
}
Console.WriteLine("Score :" + score);
}
答案 3 :(得分：0)
正如其他人所说，您应该更改代码的方法，以使其更灵活，避免不必要的重复。但是，如果我要遵循您的结构，您可以使用整数变量来存储剩余的尝试量，并在每次提交错误答案时减少它。在while循环中包含每个问题的代码，其中条件是剩下的尝试次数是> 0.示例：
string First;
int score = 0;
int attempts = 2; //our integer variable
string Second;
TextInfo textInfo = new CultureInfo("en-US", false).TextInfo;
while (attempts > 0)
{
//First question
Console.WriteLine("Where is the capital of the state of Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa"); //use WriteLine instead of Write, for console clarity
First = Console.ReadLine();
switch (First.ToUpper()) //accept lowercase inputs
{
case "B": Console.WriteLine("You entered the correct answer!"); break;
case "A": case "C": case "D": Console.WriteLine("You entered the wrong answer."); break; //same logic
default: Console.WriteLine("You did not enter a correct answer."); break;
}
if (First.ToUpper() == "B")
{
score = score + 50;
Console.WriteLine("Correct!\n" + " score:" + score + "\n");
break; //force exit loop, onto the next question
}
else
{
Console.WriteLine("Wrong!\n" + " score:" + score + "\n");
attempts--; //decrease number of attempts left
}
}
while(attempts > 0)
{
//Second question
Console.WriteLine("Where is Walt Disney World Park located in Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa");
Second = Console.ReadLine();
switch (Second.ToUpper()) //accept lowercase inputs
{
case "A": Console.Write("You entered the correct answer!"); break;
case "B": case "C": case "D": Console.WriteLine("You entered the wrong answer."); break;
default: Console.WriteLine("You did not enter a correct answer."); break;
}
if (Second.ToUpper() == "A")
{
score = score + 50;
Console.WriteLine("Correct!\n" + " score:" + score + "\n");
break; //you win!
}
else
{
Console.WriteLine("Wrong!\n" + " score:" + score + "\n");
attempts--; //decrease number of attempts left
}
}
答案 4 :(得分：0)
@ itsme86的答案很好，如果你想做面向对象等等。 但是如果你只是想学习while循环，那么以下是一种非常简单/愚蠢/丑陋的方式来实现你想要做的事情：
Console.Write("Where is the capital of the state of Florida? A.Orlando,B.Tallahassee, C. Miami, or D. Tampa");
var first = "";
bool answeredCorrect = false; //Track B answered.
int attempts = 0; //Track 2 attempts.
while (!answeredCorrect && attempts < 2)
{
first = Console.ReadLine();
switch (first)
{
case "B":
Console.WriteLine("You entered the correct answer!");
score = score + 50;
Console.WriteLine("Correct!\n" + " score:" + score + "\n");
answeredCorrect = true;
break; //break and skip while because "answeredCorrect" is now true.
case "A":
Console.WriteLine("You entered the wrong answer.");
attempts++; //Inkrement attempts. (One more try. Or skip if attemps is 2)
break;
//case C,D...
default:
Console.WriteLine("You did not enter a correct answer.");
attempts++; //Inkrement attempts. (One more try. Or skip if attemps is 2)
break;
}
}
if(first != "B")
{
Console.WriteLine("Wrong!\n" + " score:" + score + "\n");
}
（我们公司的一些人写这种代码）