CLASS XI

Write a program to accepts two integers and print their sum.

Write a program that accepts radius of a circle and prints its area.

Write a program that accepts base and height and calculate the area of triangle.

Write a program that inputs a student’s marks in three subjects (out of 100) and prints the percentage marks.

Write a program to compute area of square andtriangle.

Write a program to calculate simple interest.

Write a program to read two numbers and prints theirquotient and reminder.

Write a program to find whether a given number iseven or odd.

Write a program to find largest among three integers.

10)

Write a program to find lowest among three integers.

11)

Write a program that accepts length and breadth of rectangle and calculate its area.

12)

Write a program that accepts weight in Kg and height in meters and calculate the BMI.

13)

Write a program that reads the number n and print the value of n², n³ and n⁴.

14)

Write a program to accept the marks of five subjects and calculate the average marks.

15)

Write a program to accept theheight in cm and convert it into feet and inches.

16)

Write a program that accepts the age and print if one is eligible to vote or not.

17)

Write a program that accepts two numbers and check if the first number is fully divisible by second number or not.

18)

Write a program to read base,width and height of parallelogram and calculate its area and perimeter.

19)

Write a program to accept the year and check if it is a leap year or not.

20)

Write a program to obtain x, y, z and calculate 4x⁴+3y³+9z+6π.

21)

Write a program to input a number and print its square if it is odd, otherwise print its square root.

22)

Write a program to input a number and check whether it is positive, negative or zero.

23)

Write a program to input percentage marks of a student and find the grade as per following criterion:

Marks Grade

>=90 A

75-90 B

60-75 C

Below 60 D

24)

Write a program to enter a number and check if it is a prime number or not.

25)

Write a program to display a menu for calculating area of circle or perimeter of the circle.

26)

Write a program that reads two numbers and an arithmetic operator and displays the computed result.

27)

Write a program to print whether a given character is an uppercase or a lowercase character or a digit or any other character.

28)

Write a program to calculate and print the roots of a quadratic equation ax²+bx+c=0.(a≠0)

29)

Write a program to print sum of natural numbers between 1 to 7. Print the sum progressively i.e. after adding each natural number, print sum so far.

30)

Write a program to calculate the factorial of a number.

31)

Write a program to create a triangle of stars using nested loop.

32)

Write a Python script to print Fibonacci series’ first 20 elements.

33)

Write a program to read an integer>1000 and reverse the number.

34)

Input three angles and determine if they form a triangle or not.

35)

Write a Python script that displays first ten Mersenne numbers.

36)

Write a Python script that displays first ten Mersenne numbers and displays ‘Prime’ next to Mersenne Prime Numbers.

37)

Write a program to calculate BMI and print the nutritional status as per following table:

*Nutritional Status*	*WHO criteria BMI cut-off*
Underweight	<18.5
Normal	18.5-24.9
Overweight	25-29.9
Obese	≥30

38)

Write python script to print following pattern.

1 3

1 3 5

1 3 5 7

39)

Write a program to find sum of series :

s=1+x+x ²+x ³+x ⁴…+x ⁿ

40)

Write a python script to input two numbers and print their lcm and hcf.

41)

Write a python script to calculate the sum of the following series:

S=(1)+(1+2)+(1+2+3)+……+(1+2+3+….+n)

42)

Write a program to print the following using a single loop (no nested loops)

1 1

1 1 1

1 1 1 1

1 1 1 1 1

43)

Write a program to print a pattern like:

4 3 2 1

4 3 2

4 3

44)

44.Program that reads a line and print its statistics like:

Number of uppercase letters:

Number of lowercase letters:

Number of alphabets:

Number of digits:

45)

Write a program that reads a line and a substring and displays the number of occurrences of the given substring in the line.

46)

Write a program that takes a string with multiple words and then capitalizes the first letter of each word and forms a new string out of it.

47)

Write a program that reads a string and checks whether it is a palindrome string or not.

48)

Write a program that reads a string and displays the longest substring of the given string having just the consonants.

49)

Write a program that reads a string and then prints a string that capitalizes every other letter in the string.

50)

Write a program that reads the email id of a person in the form of a string and ensures that it belongs to domain @edupillar.com (Assumption: no invalid characters are there in email-id)

1.Write a program to accepts two integers and print their sum.

a=int(input('Enter the first integer:'))

b=int(input('Enter the second integer:'))

Sum=a+b

print('The two integers are:', a, b)

print('The sum of two integers are:', Sum)

OUTPUT:-

2.Write a program that accepts radius of a circle and prints its area.

r=int(input('Enter the radius of circle:'))

Area=3.14*r**2

print('The area of the circle is:', Area)

OUTPUT:-

3. Write a program that accepts base and height and calculate the area of triangle.

b=float(input('Enter the base of triangle:'))

h=float(input('Enter the height of triangle:'))

Area=(1/2)*b*h

print('The area of triangle is:', Area)

OUTPUT:-

4. Write a program that inputs a student’s marks in three subjects (out of 100) and prints the percentage marks.

print('Enter the marks of three subject out of 100')

a=float(input('Enter the marks of first subject:'))

b=float(input('Enter the marks of second subject:'))

c=float(input('Enter the marks of third subject:'))

P=(a+b+c)/3

print('The percentage marks are:', P,'%')

OUTPUT:-

5. Write a program to compute area of square and triangle.

a=float(input('Enter the value of side:'))

A=a**2

T=((3**0.5)/4)*a**2

print('The area of square is:', A)

print('The area of triangle is:', T)

OUTPUT:-

6. Write a program to calculate simple interest.

P=float(input('Enter the principal amount in ₹:'))

R=float(input('Enter the rate of interest:'))

T=float(input('Enter the time in years:'))

SI=(P*R*T)/100

print('The simple interest is:', SI,'₹')

OUTPUT:-

7. Write a program to read two numbers and prints their quotient and reminder.

a=float(input('Enter the dividend:'))

b=float(input('Enter the divisor:'))

Q=a//b

R=a%b

print('The quotient is:', Q)

print('The remainder is:', R)

OUTPUT:-

8. Write a program to find whether a given number is even or odd.

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

if a%2==0:

print('The number is even')

else:

print('The number is odd')

OUTPUT:-

9. Write a program to find largest among three integers.

a=int(input('Enter the first integer:'))

b=int(input('Enter the second integer:'))

c=int(input('Enter the third integer:'))

if a>b and a>c:

print(a, 'is the largest integer')

if b>a and b>c:

print(b, 'is the largest integer')

if c>a and c>b:

print(c, 'is the largest integer')

OUTPUT:-

10.Write a program to find lowest among three integer.

a=int(input('Enter the first integer:'))

b=int(input('Enter the second integer:'))

c=int(input('Enter the third integer:'))

ifa<b and a<c:

print(a, 'is the smallest integer')

ifb<a and b<c:

print(b, 'is the smallest integer')

ifc<a and c<b:

print(c, 'is the smallest integer')

OUTPUT:-

11. Write a program to that accepts length and breadth of rectangle and calculate its area.

l=float(input('Enter the length of rectangle:'))

b=float(input('Enter the breadth of rectangle:'))

area=l*b

print('Rectangle Specifications')

print('Length=',l)

print('Breadth=', b)

print('Area=', area)

OUTPUT:-

12.Write a program that accepts weight in Kg and height in meters and calculate the BMI.

W = float(input('Enter the weight in Kg:'))

H = float(input('Enter height in meters:'))

BMI=W/(H**2)

print('BMI is:', BMI)

OUTPUT:-

13.Write a program that reads the number n and print the value of n², n³ and n⁴.

a=float(input('Enter the value of n:'))

b=a**2

c=a**3

d=a**4

print('The value of n² is:', b)

print('The value of n³ is:', c)

print('The value of n⁴ is:', d)

OUTPUT:-

14.Write a program to accept the marks of five subjects and calculate the average marks.

a=float(input('Enter the marks of first subject:'))

b=float(input('Enter the marks of second subject:'))

c=float(input('Enter the marks of third subject:'))

d=float(input('Enter the marks of fourth subject:'))

e=float(input('Enter the marks of fifth subject:'))

Average=(a+b+c+d+e)/5

print('The average marks are:', Average)

OUTPUT:-

15.Write a program to accept the height in cm and convert it into feet and inches.

a=float(input('Enter your height in centimeters:'))

Feet=a*0.032

Inch=a*0.393

print('Your height in feet is:', Feet)

print('Your height in inch is:', Inch)

OUTPUT:-

16.Write a program that accepts the age and print if one is eligible to vote or not.

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

if a>=18:

print('You are eligible to vote')

else:

print('You are not eligible to vote')

OUTPUT:-

17.Write a program that accepts two numbers and check if the first number is fully divisible by second number or not.

a=float(input('Enter the first number:'))

b=float(input('Enter the second number:'))

if a%b==0:

print('The first number is fully divisible by second number')

else:

print('The first number is not fully divisible by second number')

OUTPUT:-

18.Write a program to read base, width and height of parallelogram and calculate its area and perimeter.

b=float(input('Enter the base of parallelogram:'))

w=float(input('Enter the width of parallelogram:'))

h=float(input('Enter the height of parallelogram:'))

Area=b*h

Perimeter=2*(b+w)

print('The area of parallelogram is:', Area)

print('The perimeter of parallelogram is:', Perimeter)

OUTPUT:-

19.Write a program to accept the year and check if it is a leap year or not.

a=int(input('Enter the year:'))

if a%4==0:

print('This year is a leap year')

else:

print('This year is not a leap year')

OUTPUT:-

20.Write a program to obtain x, y, z and calculate 4x⁴+3y³+9z+6π.

print('To calculate 4x⁴+3y³+9z+6π')

x=float(input('Enter the number x:'))

y=float(input('Enter the number y:'))

z=float(input('Enter the number z:'))

import math

b=(4*math.pow(x,4))+(3*math.pow(y,3))+(9*z)+(6*math.pi)

print('The result of the above expression is:',b)

OUTPUT:-

21.Write a program to input a number and print its square if it is odd, otherwise print its square root.

x=float(input(‘Enter the number:’))

import math

a=math.pow(x,2)

b=math.sqrt(x)

if x%2!=0:

print('The value of square is:',a)

else:

print('The value of square root is:',b)

OUTPUT:-

22.Write a program to input a number and check whether it is positive, negative or zero.

a=float(input('Enter the number:'))

if a>=0:

if a==0:

print('The number is zero')

else:

print('The number is a positive number')

else:

print('The number is a negative number')

OUTPUT:-

23.Write a program to input percentage marks of a student and find the grade as per following criterion:

Marks Grade

>=90 A

75-90 B

60-75 C

Below 60 D

a=float(input('Enter the percentage marks:'))

if a>=90:

print('The student has got an A grade')

elif a>=75 and a<90:

print('The student has got a B grade')

elif a>=60 and a<75:

print('The student has got a C grade')

else:

print('The student has got a D grade')

OUTPUT:-

24. Write a program to enter a number and check if it is a prime number or not.

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

for i in range(2,num//2+1):

if num%i==0:

print('It is not a prime no.')

break

else:

print('It is a prime number')

OUTPUT:-

25. Write a program to display a menu for calculating area of circle or perimeter of the circle.

r=float(input(‘Enter the radius of the circle:’)

print(‘1.Calculate perimeter’)

print(‘2.Calculate area’)

choice=int(input(‘Enter your choice (1 or 2):’))

if choice==1:

peri=2*3.14159*r

print(‘Perimeter of the circle with radius’,r,’:’,peri)

else:

area=3.14159*r*r

print(‘Area of the circle of the radius’,r,’:’,area)

26.Write a program that reads two numbers and an arithmetic operator and displays the computed result.

a=float(input('Enter the first number:'))

b=float(input('Enter the second number:'))

c=input('Enter the operator[/,*,+,-]:')

if c=='/':

r=a/b

elif c=='*':

r=a*b

elif c=='+':

r=a+b

elif c=='-':

r=a-b

else:

print('Invalid operator')

print(a,c,b,'=',r)

27.Write a program to print whether a given character is an uppercase or a lowercase character or a digit or any other character.

ch=input('Enter a single character:')

if ch>='A' and ch<='Z':

print('You have entered an uppercase character.')

elif ch>='a' and ch<='z':

print('You have entered an lowercase character.')

elif ch>='0' and ch<='9':

print('You have entered a digit.')

else:

print('You have entered a special character.')

28.Write a program to calculate and print the roots of a quadratic equation ax²+bx+c=0.(a≠0)

import math

print('For quadratic equation, ax²+bx+c=0,enter coefficents below')

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

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

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

if a==0:

print('Value of a should not be zero')

print('Aborting!!')

else:

d=b*b-4*a*c

if d>0:

root1=(-b+math.sqrt(d))/(2*a)

root2=(-b-math.sqrt(d))/(2*a)

print('Roots are real and unequal')

print('Root1=',root1,',Root2=',root2)

elif d==0:

root1=-b/2*a

print('Roots are real and equal')

print('Root1=', root1,',Root2=',root1)

else:

print('Roots are complex and imaginary')

OUTPUT:-

29. Write a program to print sum of natural numbers between 1 to 7. Print the sum progressively i.e. after adding each natural number, print sum so far.

Sum=0

for n in range(1,8):

Sum+=n

print('Sum of natural numbers <=',n,'is',Sum)

OUTPUT:-

30.Write a program to calculate the factorial of a number.

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

fact=1

a=1

while a<=num:

fact*=a

a+=1

print('The factorial of',num,'is',fact)

OUTPUT:-

31. Write a program to create a triangle of stars using nested loop.

for i in range(1,6):

print()

for j in range(1,i):

print('*',end=' ')

32.Write a Python script to print Fibonacci series’ first 20 elements.

first=0

second=1

print(first, end=' ')

print(second,end=' ')

for a in range(1,19):

third=first+second

print(third,end=' ')

first,second=second,third

OUTPUT:-

33.Write a program to read an integer>1000 and reverse the number.

num=int(input('Enter a number (>1000):'))

tnum=num

reverse=0

while tnum>0:

digit=tnum%10

reverse=reverse*10+digit

tnum=tnum//10

print('Reverse of',num,'is',reverse)

OUTPUT:-

34.Input three angles and determine if they form a triangle or not.

angle1=angle2=angle3=0

angle1=float(input('Enter the first angle:'))

angle2=float(input('Enter the second angle:'))

angle3=float(input('Enter the third angle:'))

if angle1+angle2+angle3==180:

print('The angles form a triangle')

else:

print('The angles do not form a triangle')

OUTPUT:-

35.Write a Python script that displays first ten Mersenne numbers.

print('First 10 Mersenne numbers are:')

for a in range(1,11):

mersnum=2**a-1

print(mersnum,end=' ')

print()

OUTPUT:-

36. Write a Python script that displays first ten Mersenne numbers and displays ‘Prime’ next to Mersenne Prime Numbers.

for a in range(1,21):

mersnum=2**a-1

mid=mersnum//2+1

for b in range(2,mid):

if mersnum%b==0:

print(mersnum)

break

else:

print(mersnum,'\tPrime')

OUTPUT:-

37.Write a program to calculate BMI and print the nutritional status as per following table:

*Nutritional Status*	*WHO criteria BMI cut-off*
Underweight	<18.5
Normal	18.5-24.9
Overweight	25-29.9
Obese	≥30

w=float(input('Enter the weight in kgs:'))

h=float(input('Enter the height in meters:'))

BMI=w/h**2

print('BMI is',BMI,end='')

if BMI<18.5:

print('...Underweight')

elif BMI>=18.5 and BMI<24.9:

print('...Normal')

elif BMI>=25 and BMI<29.9:

print('...Overweight')

else:

print('...Obese')

OUTPUT:-

38.Write python script to print following pattern.

1 3

1 3 5

1 3 5 7

for a in range(3,10,2):

print()

for b in range(1,a,2):

print(b, end=' ')

print()

OUTPUT:-

39.Write a program to find sum of series :

s=1+x+x ²+x ³+x ⁴…+x ⁿ

x=float(input('Enter the value of x:'))

n=int(input('Enter the value of n (for x**n):'))

s=0

for a in range(n+1):

s+=x**a

print('Sum of first' ,n,'terms:',s)

OUTPUT:-

40.Write a python script to input two numbers and print their lcm and hcf.

x=int(input('Enter the first number:'))

y=int(input('Enter the second number:'))

if x>y:

smaller=y

else:

smaller=x

for i in range(1,smaller+1):

if x%i==0 and y%i==0:

hcf=i

lcm=(x*y)/hcf

print('The HCF of',x,'and',y,'is:',hcf)

print('The LCM of',x,'and',y,'is:',lcm)

OUTPUT:-

41.Write a python script to calculate the sum of the following series:

S=(1)+(1+2)+(1+2+3)+……+(1+2+3+….+n)

Sum=0

n=int(input('How many terms?'))

for a in range(2,n+2):

term=0

for b in range(1,a):

term+=b

print('Term',(a-1),':',term)

Sum+=term

print('Sum of',n,'terms is:',Sum)

OUTPUT:-

42.Write a program to print the following using a single loop (no nested loops)

1 1

1 1 1

1 1 1 1

1 1 1 1 1

n=1

for a in range(5):

print(n)

print()

n=n*10+1

OUTPUT :-

43.Write a program to print a pattern like:

4 3 2 1

4 3 2

4 3

for i in range(4):

for j in range(4,i,-1):

print(j,end=' ')

else:

print()

OUTPUT:-

44.Program that reads a line and print its statistics like:

Number of uppercase letters:

Number of lowercase letters:

Number of alphabets:

Number of digits:

line=input('Enter a line:')

lowercount=uppercount=0

digitcount=alphacount=0

for a in line:

if a.islower():

lowercount+=1

elif a.isupper():

uppercount+=1

elif a.isdigit():

digitcount+=1

if a.isalpha():

alphacount+=1

print('Number of uppercase letters are:',uppercount)

print('Number of lowercase letters are:',lowercount)

print('Number of alphabets are:',alphacount)

print('Number of digits are:',digitcount)

OUTPUT:-

45.Write a program that reads a line and a substring and displays the number of occurrences of the given substring in the line.

line=input('Enter line:')

sub=input('Enter substring:')

length=len(line)

lensub=len(sub)

start=count=0

end=length

while True:

pos=line.find(sub,start,end)

if pos!=-1:

count+=1

start=pos+lensub

else:

break

if start>=length:

break

print('No. of occurences of',sub,':',count)

OUTPUT:-

46.Write a program that takes a string with multiple words and then capitalizes the first letter of each word and forms a new string out of it.

string=input('Enter a string:')

length=len(string)

a=0

end=length

string2=''

while a<length:

if a==0:

string2+=string[0].upper()

a+=1

elif (string[a]==' ' and string[a+1]!=' '):

string2+=string[a]

string2+=string[a+1].upper()

a+=2

elif (string[a]==',' and string[a+1]!=','):

string2+=string[a]

string2+=string[a+1].upper()

a+=2

else:

string2+=string[a]

a+=1

print('Original string:',string)

print('Capitalized words string:',string2)

OUTPUT:-

47.Write a program that reads a string and checks whether it is a palindrome string or not.

string=input('Enter a string:')

length=len(string)

mid=length//2

rev=-1

for a in range(mid):

if string[a]==string[rev]:

print(string,'is a palindrome.')

break

else:

print(string,'is not a palindrome.')

break

OUTPUT:-

48.Write a program that reads a string and displays the longest substring of the given string having just the consonants.

string=input('Enter a string:')

length=len(string)

maxlength=0

maxsub=''

sub=''

lensub=0

for a in range(length):

if string[a] in 'aeiou' or string[a] in 'AEIOU':

if lensub>maxlength:

maxsub=sub

maxlength=lensub

sub=''

lensub=0

else:

sub+=string[a]

lensub=len(sub)

a+=1

print('Maximum length consonant substring is:',maxsub,end=' ')

print('with',maxlength,'characters')

OUTPUT:-

49.Write a program that reads a string and then prints a string that capitalizes every other letter in the string.

string=input('Enter a string:')

length=len(string)

print('Original string:',string)

string2=''

for a in range(0,length,2):

string2+=string[a]

if a<length-1:

string2+=string[a+1].upper()

print('Alternatively capitalized string:',string2)

OUTPUT:-

50.Write a program that reads the email id of a person in the form of a string and ensures that it belongs to domain @edupillar.com (Assumption: no invalid characters are there in email-id)

email=input('Enter your email id:')

domain='@edupillar.com'

ledo=len(domain) #ledo=length of domain

lema=len(email) #lema=length of email

sub=email[lema-ledo:]

if sub==domain:

if ledo!=lema:

print('It is valid email id')

else:

print('This is invalid email id- contains just the domain name')

else:

print('This email-d is either not valid or belongs to some other domain')

OUTPUT:-

1. fred			#Keywords
2.	#if		# Invalid
3.	#2x		#Invalid
4.	-4		#Constant
5. sum_total			#identifier
6. sumTotal			#identifier
7. sum-total			#Expression
8.	#sum total		#Invalid
9.	Sumtotal		#identifier
10.		While	#identifier
11. x2			#identifier
12. Private			#Keywords
13. public			#Keywords
14.		#$16	#Invalid
15. xTwo			#identifier
16.		_static	#identifier
17.		_4	#identifier
18.		___	#identifier
19.		#10%	#Invalid
20. a27834			#identifier
21.		#wilma’s	#Invalid

CLASS XI

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Assignment on Basic Output Questions

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Python Programs 3