private static double[] rangeLimit = { 60.0, 75.0, 85.0, 95.0,100.0 };
private static string[] grade = {"不合格", "合乎要求", "良好", "优秀" ,"卓越"};
private static readonly int maxLevel = grade.Length - 1;
public static string CalculateGrade(double score)
{
int level = 0;
while (level <= maxLevel)
{
if (score < rangeLimit[level])
{
return grade[level];
}
else
{
level++;
}
}
return grade[maxLevel];
}