C++ AGE CAN VOTE

#include<iostream.h>
#include<conio.h>
void main(){
clrscr();
int num1;
char name[20];
char address[20];
cout<<"VOTING SYSTEM";
cout<<"\nEnter ur name:"<<endl;
cin>>name;
cout<<"\nEnter ur address:"<<endl;
cin>>address;
cout<<"\nEnter age:";
cin>>num1;
if (num1>=18)
{
cout<<"Can vote!";
}
else
{
cout<<"\nNot vote!";
}
getch();
}