2. 这是一个根据考试成绩统计各分数段人数的程序,数组a中存放一组考试成绩,数组b中设定分数段界限值,数组c用来存放各分数段的统计人数.输出统计结果
int [] a = new int[10]{76,84,54,62,40,75,90,93,77,85}; //学生成绩
int [] b = new int [5]{0,60,70,80,90};  //分数段
int[] c = new int[5] {0,0,0,0,0};      //各分数段的统计

90 以上也是一段

for(int i=0;i<10;i++)
                if (a[i] > b[0] && a[i] < b[1])
                {
                    c[0]++;
                }
                else if (a[i]>b[1]&&a[i]<b[2])
            {
                c[1]++;
            }
            else if(a[i]>b[2]&&a[i]<b[3])
                {
                    c[2]++;
            }
            else if (a[i] > b[3] && a[i] < b[4])
            {
                c[3]++;
            }
            else if (a[i] >= b[4])
            {
                c[4]++;
            }
        for (int k = 0; k < 5; k++)
        {
            Console.WriteLine("{0}", c[k]);
        }