Python subjective question for competitive exam (19)

Q1 Program to find string is palindrome or not.

string=input("enter string1")

l=len(string)

rev=-1

for i in range(len(string)):

    if string[i]==string[rev]:

        i+=1

        rev-=1

    else:

         print(string ,"is not palindrome")

         break

else:

    print(string,"is a palindrome")

Output

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter string1mam

mam is a palindrome

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter string1ram

ram is not palindrome

Q2.Program of calculator using else if.

a=int(input("enter number1"))

b=int(input("enter number2"))

ch=input("enter choce")

if(ch=='+'):

    c=a+b

    print(c)

elif(ch=='-'):

    c=a-b

    print(c)

elif(ch=='*'):

    c=a*b

    print(c)

else:

    c=a/b

    print(c)

    

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter number12

enter number23

enter choce+

5

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter number12

enter number23

enter choce/

0.6666666666666666        

Q3.Program to convert decimal to binary.

n=int(input("enter a number"))

bn=""

re=""

de=-1

while(n>=1):

    r=str(int(n%2))

    n=n/2

    bn=bn+r

for i in range(len(bn)):

    re=re+bn[de]

    de=de-1

print(re)

Output

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter a number15

1111

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter a number100

1100100

Q4.Program to convert decimal to octal.

n=int(input("enter a number"))

bn=""

re=""

de=-1

while(n>=1):

    r=str(int(n%8))

    n=n/8

    bn=bn+r

for i in range(len(bn)):

    re=re+bn[de]

    de=de-1

print(re)

Output

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter a number12

14  

Q5.Program to convert string in uppercase.

s1=input("enter string")

s2=s1.upper()

print(s2)

Output

>>> 

==================== RESTART: C:/Users/Dell/Desktop/dd.py ====================

enter stringram

RAM