def main(): score = int(input('输入分数:\n')) #**********SPACE********** if score ________________ 90: grade = 'A' elif score >= 60: #**********SPACE********** grade = ________________ #**********SPACE********** ________________ grade = 'C' #**********SPACE********** print('%d 属于 %s' % (score,________________)) if __name__ == '__main__': main()

以下是填空的代码：

def main():
    score = int(input('输入分数:\n'))
    if score >= 90:
        grade = 'A'
    elif score >= 60:
        grade = 'B'
    else:
        grade = 'C'
    print('%d 属于 %s' % (score, grade))

if __name__ == '__main__':
    main()

程序的功能是根据用户输入的分数来判断其等级。程序首先获取用户输入的分数，并将其保存在变量score中。然后，程序使用if-elif-else语句来判断分数的等级。如果分数大于等于90分，则等级为A；如果分数大于等于60分，则等级为B；否则，等级为C。最后，程序输出分数和等级。

相关问题

题目：利用条件运算符的嵌套来完成此题：学习成绩>=90分的同学 用A表示，60-89分之间的用B表示，60分以下的用C表示。 --------------------------------------------------------- 注意：除要求填空的位置之外，请勿改动程序中的其他内容。 ------------------------------------------------------''' def main(): score = int(input('输入分数:\n')) #**********SPACE********** if score ________________ 90: grade = 'A' elif score >= 60: #**********SPACE********** grade = ________________ #**********SPACE********** ________________ grade = 'C' #**********SPACE********** print('%d 属于 %s' % (score,________________)) if __name__ == '__main__': main()

答案：可以使用以下代码实现：

def main():
    score = int(input('输入分数:\n'))
    grade = 'A' if score >= 90 else ('B' if score >= 60 else 'C')
    print('%d 属于 %s' % (score, grade))

if __name__ == '__main__':
    main()

在给定的代码框架中，需要在空白处填写代码，使用条件运算符的嵌套来判断成绩等级。首先判断成绩是否大于等于90分，如果是，则成绩等级为A；如果不是，则进入下一个判断，判断成绩是否大于等于60分，如果是，则成绩等级为B，否则成绩等级为C。最后将成绩等级输出即可。

1. 定义学生类，包括学号、姓名、性别、多门课程的成绩；假设有n个学生，由键盘输入学生信息； 2.定义类成员函数，计算每个学生的平均成绩； 3.按课程统计每门课程的平均成绩、最高分和最低分； 4.同时输出所有学生信息； 5. 通过输入学生学号或姓名查询某学生的信息。

class Student:
def __init__(self, number, name, gender, scores):
self.number = number
self.name = name
self.gender = gender
self.scores = scores

def average_score(self):
return sum(self.scores) / len(self.scores)

@staticmethod
def course_statistics(students):
courses = [[] for _ in range(len(students[0].scores))]
for student in students:
for i in range(len(student.scores)):
courses[i].append(student.scores[i])
course_avg = [sum(course) / len(course) for course in courses]
course_max = [max(course) for course in courses]
course_min = [min(course) for course in courses]
return course_avg, course_max, course_min

@staticmethod
def print_students(students):
for student in students:
print(f"Number: {student.number}, Name: {student.name}, Gender: {student.gender}, Scores: {student.scores}")

@staticmethod
def search_student(students, keyword):
for student in students:
if keyword in student.number or keyword in student.name:
return student
return None

if __name__ == '__main__':
n = int(input("Enter the number of students: "))
students = []
for i in range(n):
number = input(f"Enter the number of student {i + 1}: ")
name = input(f"Enter the name of student {i + 1}: ")
gender = input(f"Enter the gender of student {i + 1}: ")
scores = [int(score) for score in input(f"Enter the scores of student {i + 1} separated by space: ").split()]
student = Student(number, name, gender, scores)
students.append(student)

for student in students:
print(f"Average score of {student.name}: {student.average_score()}")

course_avg, course_max, course_min = Student.course_statistics(students)
for i in range(len(course_avg)):
print(f"Course {i + 1}: average score {course_avg[i]}, max score {course_max[i]}, min score {course_min[i]}")

Student.print_students(students)

keyword = input("Enter the student number or name to search: ")
searched_student = Student.search_student(students, keyword)
if searched_student:
print(f"Number: {searched_student.number}, Name: {searched_student.name}, Gender: {searched_student.gender}, Scores: {searched_student.scores}")
else:
print("Student not found.")