Return 0

Question

The answer to this is 45 but in the code its return 0
So why would code run to give a number i.e 45 when it is to be returned 0?

Answer 1

That return 0 is returned to operating system. Not to console output. Program outputs displayed on console output. Returned statements returned to calling functions.
OS expects a value from Program to determine program status.
Generally return 0 means Program successfully executed and otherthan zero means Program exited with errors...
Hoping this helps you.

Answer 2

What about you are taking? About your code calculations or at end return 0?

Answer 3

About return 0