Why my answer is wrong

help
,
1

my answer

i try to create a int called sum and add the first digit and last digit to sum and then cout them.
last digit is using the (% 10) to find
first digit is constantly divide the integer with 10

i passed the example but it is a wrong answer to submission.
I wonder if my code is only suitable for short integer but not long.

2

Consider the test input:

1
10
1 Like
3

Hey @benily,

what if input is 10 ?

1 Like
4

oh… i see
therefore i should change the while loop to (a > 9)

thanks!

1 Like
5

Just change while(a>10) to while(a>9)

1 Like
6

understand ! thanks

7

thanks :slight_smile: