Question

Python Programming

Instructions

Octal numbers have a base of eight and the digits 0–7. Write the scripts octalToDecimal.py and decimalToOctal.py, which convert numbers between the octal and decimal representations of integers.

These scripts use algorithms that are similar to those of the binaryToDecimal and decimalToBinary scripts developed in the Section: Strings and Number Systems.

An example of octalToDecimal.py input and output is shown below:

Enter a string of octal digits: 234

The integer value is 156

An example of decimalToOctal.py input and output is shown below:

Enter a decimal integer: 27

Quotient	Remainder	Octal
3	3	3
0	3	33

The octal representation is 33

Answer 1

#OctalToDecimal.py
def Decimal(n):
    n=int(n)
    i=0
    num=0
    while(n):
        a=n%10 #find the last digit
        if(a>7):
            print("Digit should be 0-7")
            return 0
        num+=a*(8**i) #mul the last digit with 8 power
        i+=1
        n=n//10 #remove last digit from number
    print("The integer value is",num)


n=input("Enter a string of octal digits:")
Decimal(n)

#DecimalToOctal.py
def Octal(n):
    Quotient=int(n)
    Remainder=0
    Octal=0
    i=0
    print("Quotient     Remainder       Octal")
    while(Quotient):
        Remainder=Quotient%8
        Quotient=Quotient//8
        Octal=Remainder*(10**i)+Octal
        i+=1
        print(Quotient,"          ",Remainder,"           ",Octal)
    print("The octal representation is",Octal)
n=input("Enter a string of octal digits:")
Octal(n)