What is the difference between void and int ?

Answer 1

Void has no return type
Int .....return type is necessary

Answer 2

void represents absence of data.
int represents an integer element.

Answer 3

Void infers that program doesnt return any value. Int refers to return datatype to be an integer value

Answer 4

void mean they have no return type of function and int function means that function return integer value after execution of the code.
int sum (int a,int b)-->they return integer sum
void sum (int a,int b)-->they only compute not return any thing.