what is the situation to use void? can we replace void with int ?

Answer 1

you can replace void with int if you want to return something(to be more specific...if you want to return an integer value)

void functions doesn't return anything...

Answer 2

A void function does not return anything and only runs the code inside it. If you want your function to return a int then replace the void with an int.

Answer 3

a void function used where the function doesn't return any value u can also give int at that time but you should also include return0 in the below function