program to find the area of triangle in c++

#include<iostream.h>
#include<conio.h>
int main()
{
clrscr();
int a,b,triangle;
cout<<"enter the value a:";
cin>>a;
cout<<"enter the value b:";
cin>>.b;
triangle = a * b;
cout<<"the required triangle:";
cout<<triangle;
getch();
return(0);
}

https://www.youtube.com/watch?v=ykTaoik98yo