Question

how to find the sum of first & last digit of a no.

Answer 1

want to do it in python(or any other language) or just logic ?

Answer 2

just logic

Answer 3

i want to know just logic

Answer 4

see if you have a number n
1. n % 10 = last digit
e.g n = 1234
a = n % 10
a will be 4 ( % gives the remainder)
clear till now ?

Answer 5

yes

Answer 6

now if you do n/10
NOTE : that if you divide int, the decimal gets removed
e.g n = n /10 (n = 123 after this step)
(because n = 1234 , n/10 = 123.4(in maths) , but int division by int result in int so only 123 gets stored)
so if you do it repeatedly you will get at some point n = 1 and this will be first digit

clear ?

Answer 7

yes

Answer 8

yes,plz tell me further

Answer 9

finally
step 1 : lastdigit = number % 10

step 2 : for first digit use some while loop etc
e.g while(n > 0) etc and when loop exits the last digit would be in n

actually i don`t want to tell you code directly so you try first , this will help you immensely in improving your logic application and programming

if you are struck anywhere post here i am there for help

Answer 10

It's an additional knowledge for me :) Thanks