What is return 0;

Question

what is return 0; in c++ programming . what is its use

Answer 1

A function may return a value. The return_type is the data type of the value the function returns. Some functions perform the desired operations without returning a value. In this case, the return_type is the keyword void.

Answer 2

You an also ommit return 0; at the end of your main function and it gets generated automatically.

Answer 3

chandrapal singh Yes.

Answer 4

chandrapal singh What I wrote: It will be generated automatically.

Answer 5

You can use any number but 0 is used for tell to calling system eventual that execution was go ok with no errors (you can run a process by another process and wait for result)

Answer 6

means

Answer 7

chandrapal singh Your code will work as if you had written return 0; at the end of your main function.

Answer 8

bhai app India se ho

Answer 9

if i don't write return0

Answer 10

then what will happen

Answer 11

In the main function it’s the “conventional” return code to the caller from an application which exited with no error.
You can change this value at will, for example return 9 if you can’t read a file, return 5 if your app couldn’t connect to a database, etc..