Untitled, Finding roots. (c++)

Finding roots. (c++)

#include <iostream.h>
#include <conio.h>
#include <math.h>

float a,b,c,s,root,R;

int main()

{   clrscr();
    cout«”enter an number for a : “;
    cin»a;
    cout«”enter an number for b : “;
    cin»b;
    cout«”Enter an number for c : “;
    cin»c;
    s=(a+b+c)/2;
    root=s*(s-a)*(s-b)*(s-c);
    R=(a*b*c)/(4*pow(root,0.5));
    cout«”radius = ” «R«”\n”;
    getch();
    return 0;
}