On 11/04/2014 21:58, Saba Usmani wrote:
Hi,
I am meant to design code for a program that converts from binary number
to decimal and vice versa.
This is what i have so far:
print "Welcome to the binary and decimal converter"
loop = True
while loop:
bord = raw_input("Enter b for binary or d decimal or exit to exit")
if bord == "b":
d = 0
b = 0
factor = 1;
b = raw_input ("Enter Binary Number:")
b=b.lstrip("0")
b = int(b)
while(b > 0):
if((int(b) % 10) == 1):
d += factor
b /= 10
factor = factor * 2
print "The Decimal Number is: ", d
elif bord == "d":
x=0
n=int(input('Enter Decimal Number: '))
x=n
k=[] # array
while (n>0):
a=int(float(n%2))
k.append(a)
n=(n-a)/2
k.append(0)
string=""
for j in k[::-1]:
string=string+str(j)
print('The binary Number for %d is %s'%(x, string))
elif bord == "exit" :
print "Goodbye"
loop = False
- This code does not recognize invalid inputs e.g in the binary to
decimal conversion, if I enter 10021 it will not inform me,the user,
that the input is invalid. The same problem occurs with the decimal to
binary conversion - if i enter 123&&gf I am not told to try again with a
valid input - how do I implement this in the code above
Thanks
Saba
https://docs.python.org/3/tutorial/errors.html#handling-exceptions is as
good a starting point as any.
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
---
This email is free from viruses and malware because avast! Antivirus protection
is active.
http://www.avast.com
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
https://mail.python.org/mailman/listinfo/tutor
