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CSharp-运沛然-无24 #20

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CSharp-运沛然-无24 #20

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speacil111 Jul 25, 2023
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speacil111 Jul 25, 2023
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66 changes: 66 additions & 0 deletions hw1/hw1/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,72 @@ public interface IProgress

public class Progress : IProgress
{

public static int num=0;
public int requiredprogress;
public int finishedprogress;
public int Num { get { return num; } }
public int RequiredProgress { get { return requiredprogress; } }
public int FinishedProgress { get { return finishedprogress; } }
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@shangfengh shangfengh Aug 8, 2023 •
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本意是希望能在set访问器里限制 FinishedProgress的范围的，特别是多人研发时能确保安全。
但是事实上即便设置了属性，类内依旧可以访问字段，属性更像对类外操作的要求。
所以不开放set访问器（要保证赋值总是合法的，不能让外界无条件修改），只在方法内进行范围限制也合理


public bool Start(int requiredprogress)
{
if (FinishedProgress >= RequiredProgress)
{
if (requiredprogress <= 0)
throw new System.Exception("RequiredProgress must be positive. (Parameter 'Homework1.Progress')");
this.requiredprogress = requiredprogress;
finishedprogress = 0;
num++;
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Num是表示第几个实例化的Progress，不是指第几次Start

return true;
}
return false;
}
public void Add(int addprogress)
{if (addprogress < 0)
Console.WriteLine("请输入正数！");
else
{
if (finishedprogress + addprogress >= requiredprogress)
{
num++;
finishedprogress = requiredprogress;
}
else
{
finishedprogress+=addprogress;
}
}
}
public void Sub(int subprogress)
{
if (subprogress < 0)
Console.WriteLine("请输入正数！");
else
{
if (finishedprogress <= subprogress )
{
finishedprogress = 0;
}
else
{
finishedprogress -= subprogress;
}
}
}
public void Double()
{
finishedprogress = finishedprogress * 2;
if(finishedprogress > requiredprogress)
{
finishedprogress = requiredprogress;

}
}
public (int FinishedProgress, int RequiredProgress) GetProgress()
{
return (FinishedProgress, RequiredProgress);
}
// 一个进度条
// 只允许修改Progress类中的代码
// 要求实现IProgress中的要求
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