difference and usages for void and integer functions?

Question

examples of uses for Void functions? examples of uses for int functions?

why my void function prints a value to the screen? I thought a void function isn't supposed to return a value.

#include <iostream>
using namespace std;

void hope (int y)
{
cout<< y;
}

int main ()
{

hope(89);
return 0;
}

Answer 1

void not return value
when used return
void hope (int y)
{
return y ;
}
error

Answer 2

when you use a data type before a function, it basically says that the function will return a value, while void says that there wont be any values returned by the function and would give an error if you tried. For example:

int function(){} //This will return an integer because of the int
string function(){} //This will return an integer because of the string
void function(){} //This wont return anything, think of void like nothing know what I mean?

//This will give out an error:
void function(int x) { return x; }

Answer 3

Thank you