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CBSE Class 11 Computer Science Question 17 of 18

Practice Paper — Question 4

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4
Question

Question 34(b)

Write a program to create a dictionary with the roll number, name and marks of n students in a class, and display the names of students who have secured marks above 75.

Solution
n = int(input("Enter the number of students: "))
student_data = {}

for i in range(n):
    roll_number = int(input("Enter roll number for student: "))
    name = input("Enter name for student: ")
    marks = int(input("Enter marks for student: "))
    student_data[roll_number] = {'name': name, 'marks': marks}
print(student_data)

print("Students who have secured marks above 75:")
for roll_number, details in student_data.items():
    if details['marks'] > 75:
        print(details['name'])
Output
Enter the number of students: 4
Enter roll number for student: 5
Enter name for student: Ashish Kumar
Enter marks for student: 67
Enter roll number for student: 4
Enter name for student: Samay
Enter marks for student: 79
Enter roll number for student: 5
Enter name for student: Rohini 
Enter marks for student: 89
Enter roll number for student: 6
Enter name for student: Anusha
Enter marks for student: 73
{5: {'name': 'Rohini', 'marks': 89}, 4: {'name': 'Samay', 'marks': 79}, 6: {'name': 'Anusha', 'marks': 73}}
Students who have secured marks above 75:
Rohini
Samay
Answer

n
=
int
(
input
(
"Enter the number of students: "
))
student_data
=
{}
for
i
in
range
(
n
):
roll_number
=
int
(
input
(
"Enter roll number for student: "
))
name
=
input
(
"Enter name for student: "
)
marks
=
int
(
input
(
"Enter marks for student: "
))
student_data
[
roll_number
]
=
{
'name'
:
name
,
'marks'
:
marks
}
print
(
student_data
)
print
(
"Students who have secured marks above 75:"
)
for
roll_number
,
details
in
student_data
.
items
():
if
details
[
'marks'
]
>
75
:
print
(
details
[
'name'
])
Output
Enter the number of students: 4
Enter roll number for student: 5
Enter name for student: Ashish Kumar
Enter marks for student: 67
Enter roll number for student: 4
Enter name for student: Samay
Enter marks for student: 79
Enter roll number for student: 5
Enter name for student: Rohini
Enter marks for student: 89
Enter roll number for student: 6
Enter name for student: Anusha
Enter marks for student: 73
{5: {'name': 'Rohini', 'marks': 89}, 4: {'name': 'Samay', 'marks': 79}, 6: {'name': 'Anusha', 'marks': 73}}
Students who have secured marks above 75:
Rohini
Samay