Conditional Statements - Assignments

1. A company decided to give bonus of 5% to employees if his/her salary is less than 75000. Ask user for their salary and calculate his bonus and this month salary.

Example 1

Enter your salary : 85000

Output :

Your Bonus : 0

Your This Month Salary : 85000

Example 2

Enter your salary : 45000

Output :

Your Bonus : 2250

Your This Month Salary : 47500

Solution

First, we will take values from the user.

salary = int(input('Enter your salary : '))

Let us take the bonus and initialize it as 0, as we do not know anything about it.

bonus = 0

Now we will use a conditional statement that if Employee's salary is less than 75000, apply a 5 percent bonus.

if(salary<75000):

bonus = salary * 5/100

Voila!!!

print(f'Your Bonus : {bonus}')

print(f'This Month Salary : {salary})

2. A student will not be allowed to sit in exam if his attendance is less than 75 percent.Ask how many classes were held and how many classes were attended and calculate his percentage.

Example 1

Number of classes held : 100

Number of classes attended : 50

Attendance Percentage : 50.0%

You are not allowed to sit in exam.

Example 2

Number of classes held : 100

Number of classes attended : 75

Attendance Percentage : 75.0%

You are allowed to sit in exam.

Solution

Let us ask , how many classes were held and how many were attended ?

class_held = int(input('Number of classes held : '))

class_attend = int(input('Number of classes attended : '))

Calculate Percentage :

attendance_percentage = class_attend * 100 / class_held

print(f'Attendance Percentage : {attendance_percentage}%')

3.Write a program to check whether a person is eligible for voting or not.(voting age >=18)

Example 1

Enter your age : 19

You are allowed to vote

Example 2

Enter your age : 17

You are not allowed to vote

Solution

First we will ask age of the voter.

age = int(input('Enter your age : '))

Check the voter's age :

if(age>=18):

print('You are allowed to vote')

else:

print('You are not eligible to vote.')

4.Write a program to check whether a number entered by user is even or odd.

Example 1

Enter the number : 17

17 is odd

Second Tab

Enter the number : 16

16 is even

Solution

num = int(input('Enter the number : '))

if(num%2==0):

print(f'{num} is even')

else:

print(f'{num} is odd')

5.Write a program to calculate the electricity bill (accept number of unit from user) according to the following criteria :

Unit	Price
First 100 Units	No charge
Next 100 Units	5 Rs Per Unit
After 200 Units	10 Rs Per Unit

Solution

no_of_unit = int(input('Units : '))

if(no_of_unit<=100):

bill = 0

elif(no_of_unit>100 and no_of_unit<=200):

bill = (no_of_unit-100) * 5

else:

bill = 500 + (no_of_unit - 200)*10

print(bill)

6.Write a program to accept percentage from the user and display the grade according to the following criteria:

Mark	Grade
>=90	A
>=80 and <90	B
>=60 and <80	C
<60	D

Example

Enter the marks : 87

B

Solution

marks = int(input('Enter the marks : '))

if(marks>90):

print('A')

elif(marks>80 and marks<=90):

print('B')

elif(marks>60 and marks<=80):

print('C')

else:

print('D')

7.Accept the age, sex (‘M’, ‘F’), number of days and display the wages accordingly.

Age	Sex	Wage
>=18 and <30	M	700
	F	750
>=30 and <=40	M	800
	F	850

If age does not fall in any range then display the following message: “Enter appropriate age”

Solution

age = int(input('Enter age : '))

if(age>=18 and age<30):

gen = input('gender : ')

if(gen == 'M'):

wage = 700

else:

wage = 750

print(wage)

elif(age>=30 and age<=40):

gen = input('gender : ')

if(gen=='F'):

wage = 800

else:

wage = 850

print(wage)

else:

print('Enter Appropriate Age.')

8.Accept the number of days from the user and calculate the charge for library according to following :

Day	Price
Till five days	2
Six to Ten days	3
Eleven to Fifteen days	4
After Fifteen days	5

Ecample1

Enter the number of days : 16

Library Fees : 50

Solution

no_of_days = int(input('Enter the number of days : '))

if(no_of_days<=5):

fees = no_of_days * 2

elif(no_of_days>=6 and no_of_days<=10):

fees = 10 + (no_of_days-5)*3

elif(no_of_days>=11 and no_of_days<=15):

fees = 25 + (no_of_days-10)*4

else:

fees = 45 + (no_of_days-15) * 5

print(f'Library Fees : {fees}')

9.Write a program to check if a year is leap year or not. If a year is divisible by 4 then it is leap year but if the year is century year like 2000, 1900, 2100 then it must be divisible by 400.

Example 1

Enter the year : 2000

Leap Year

Example 2

Enter the year : 2100

Not a Leap Year

You work in a company and you are given customers number, But many customers filled wrong data, so you need to check if the number given by customer is right or not.

Phone Number should match following Criteria :

1. Only numbers , spaces and - are allowed though (so few customers wrote their number with spaces.)

2. 12 digits only.

3. + is allowed , though only at beginning of the number.

If it matches all the three criterias , Print it is a valid number else Print it is not a valid number with the reason why ?

Example 1

number = '+91 - 765 - 181 - 1162'

Valid Number

Untitled

number = '91 - 7651811162'

Valid Number

Solution

phone = '[phone]+62'

if(phone.startswith('+')):

phoneno = phone.replace('+','',1)

phoneno = phone.replace('-','').replace(' ','')

if(phoneno.isnumeric()):

if(len(phoneno)==12):

print('It is a valid Phone number.')

else:

print('Not a valid phone number, more numbers')

else:

print('Other characters')

You need to set a pin for your computer but there are certain rules that your pin should have to be a valid pin for your machine.

1.It should have only numbers

2.It should have any of these three symbols [&@#]

3.It should have more than 10 characters.

Solution

pin = '34893794#@#'

if(len(pin)>=10):

if('&' in pin or '@' in pin or'# ' in pin):

p = pin.replace('&','').replace('@','').replace('#','')

if(p.isnumeric()):

print('Valid Pin')

else:

print('Unacceptable Characters')

else:

print('Required Characters[&@#] are not in pin')

else:

print('Less characters in Pin')

Create a Sign up and login portal where take values like userid and password from user and sign up and then ask him to login. if credetials match print Welcome to python session else print incorrect details.

Additioal : print reason why he could not login (was user id wrong or password wrong ? )

Given two numbers, determine which one is larger.

Solution

num1 = int(input("Enter the first number: "))
num2 = int(input("Enter the second number: "))
if num1 > num2:
    print("The first number is larger.")
elif num1 < num2:
    print("The second number is larger.")
else:
    print("Both numbers are equal.")

Write a program to find the largest of three numbers.

Write a program to check whether a given string is a palindrome or not.

Solution

string = input("Enter a string: ")

if string == string[::-1]:
    print("The string is a palindrome")
else:
    print("The string is not a palindrome")

Write a program to check whether a given character is a vowel or a consonant.

Solution

char = input("Enter a character: ")

if char in "AEIOUaeiou":
    print(char, "is a vowel")
else:
    print(char, "is a consonant")

Write a program to check whether a given string is a valid email address (i.e., it contains exactly one "@" symbol and at least one "." after the "@").

Solution

email = input("Enter an email address: ")

if email.count("@") == 1 and "." in email[email.index("@"):]:
    print("The email address is valid")
else:
    print("The email address is not valid")