why don't we use "void main" instead of "int main"?

Question

i have used void main( ) in the C++ software.. and it works. Then why i don't use void main () here?

Answer 1

But i've tried void main( ) in turbo C software and it works

Answer 2

i've tried simple "Hello world" program in sololearn run platform.. using void main.. it gives error with void.
Why?