Write A C++ Program To Multiply Two Numbers By Using Function Showing Return Nothing.

#include <iostream.h> 
 #include <conio.h> 
 void main( ) 
 { 
       int x, y, mul(int,int); 
       clrscr(); 
       cout<<"\n Enter the value of x, y : "; 
       cin>>x>>y; 
       mul (x, y); 
       getch(); 
 } 
      int mul (int p, int q) 
       { 
             int s; 
             s = p * q; 
             cout <<"Multiplied value is "<<s; 
             return(0); 
        }