while (true) //讓程式重複執行可以一直輸入
{
Double NewScore = 0;
Double OldScore = 0;
Console.WriteLine("程式設計新成績");
NewScore = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("程式設計舊成績");
OldScore = Convert.ToDouble(Console.ReadLine());
Double Diff = ((NewScore - OldScore) / OldScore);
if (Diff > 0)
{
Console.WriteLine("程式設計成績=進步+" + "{0:0.00}", Diff);
Console.WriteLine("");
//Console.ReadKey();
Console.WriteLine("================");
}
else if (Diff < 0)
{
Console.WriteLine("程式設計成績=退步" + "{0:0.00}", Diff);
Console.WriteLine("");
//Console.ReadKey();
Console.WriteLine("================");
}
else
{
Console.WriteLine("程式設計成績=成績維持不變");
Console.WriteLine("");
//Console.ReadKey();
Console.WriteLine("================");
}
}