7-1 统计分数段人数 分数 10 作者 张庆 单位 集美大学 请对某次考试的分数,统计各分数段人数,统计原则:分别对10分以下、10-19分、20-29分、30-39分、40-49分、50-59分、60-69分、70-79,80-89分,90到99分,100分为一

组进行统计。

解题思路：

1. 定义10个变量，分别表示各个分数段的人数，初始值均为0。

2. 循环输入学生的分数，每输入一个分数就根据其值将相应的变量加1。

3. 循环结束后，输出各个分数段的人数。

参考代码：

# 定义各个分数段的人数变量，初始值均为0
under_10 = 0
between_10_and_19 = 0
between_20_and_29 = 0
between_30_and_39 = 0
between_40_and_49 = 0
between_50_and_59 = 0
between_60_and_69 = 0
between_70_and_79 = 0
between_80_and_89 = 0
between_90_and_99 = 0
full_score = 0

# 循环输入学生的分数
while True:
    score = input("请输入学生的分数（输入-1结束）：")
    if score == "-1":
        break
    score = int(score)
    if score < 0 or score > 100:
        print("分数无效，请重新输入！")
        continue

    if score < 10:
        under_10 += 1
    elif score < 20:
        between_10_and_19 += 1
    elif score < 30:
        between_20_and_29 += 1
    elif score < 40:
        between_30_and_39 += 1
    elif score < 50:
        between_40_and_49 += 1
    elif score < 60:
        between_50_and_59 += 1
    elif score < 70:
        between_60_and_69 += 1
    elif score < 80:
        between_70_and_79 += 1
    elif score < 90:
        between_80_and_89 += 1
    elif score < 100:
        between_90_and_99 += 1
    else:
        full_score += 1

# 输出各个分数段的人数
print("10分以下：", under_10, "人")
print("10-19分：", between_10_and_19, "人")
print("20-29分：", between_20_and_29, "人")
print("30-39分：", between_30_and_39, "人")
print("40-49分：", between_40_and_49, "人")
print("50-59分：", between_50_and_59, "人")
print("60-69分：", between_60_and_69, "人")
print("70-79分：", between_70_and_79, "人")
print("80-89分：", between_80_and_89, "人")
print("90-99分：", between_90_and_99, "人")
print("满分：", full_score, "人")