Index error in Python( index out of range)

Question

given_number=str(input("Enter the number:"))
total=str(0)
num=0
while num<=len(given_number):
       total+=given_number[num]
       num+=1
print(total)  

Got indexerror.Where is the fault?

Answer 1

The problem is in your while loop. Apparently, your loop iterates through 0 to the length of your input string while the maximum index of 0 base list/array/string is

len(given_number)-1

Modify your code like this.

   given_number=str(input("Enter the number:"))
   total=str(0)
   num=0
   while num<len(given_number): # Note: I use < not <=
       total+=given_number[num]
       num+=1
   print(total)  

I hope it will help you to overcome your problem.