Why we use return 0;

Answer 1

Because your function type is int.If you use void, it will simply be return;

Answer 2

Because that is the return data type as prescribed by the standard.

See: https://isocpp.org/std/the-standard

Answer 3

In c++,
A return 0 for main() means program executed normally.... And it can't have a return type other than int...

Answer 4

The C main function has a return value of type integer, to give the operating system a feedback about the program execution. As a convention a zero return value indicates, that the program execution was successful.

Answer 5

For normal functions any valid data type... Either built in like int, float, char, string or user defined like a class can be return type

Answer 6

basically your main function is exiting with a status code. 0 as return indicates your program succeeded, other than 0 means it exited with an Error .

Answer 7

If I use char,string type variable which return type can I use?

Answer 8

It's not the variable, but function type.

Answer 9

Why it can't have a return type other than int? Bro Saurabh B

Answer 10

See.. It has standard return type int predefined whether u write it as int main() or just write main()... It is already predefined... Other return type gives error

Answer 11

To tell the compiler that our code ends here

Answer 12

It depends upon which type of function you make. If you make a function of type int or anything else except void, you are to return something. In case of void, you do not need to return anything.

Answer 13

To return a value of data type

Answer 14

Because thats the end of your data and program. Some programs do not need return 0;
But instead use system("Pause"); to pause your program