alice cautare binara

#include <iostream>
#include <graphics.h>
#include <stdlib.h>
#include <conio.h>
#include <math.h>
#include <dos.h>

using namespace std;

const int n=10;
int v[n]={3, 18, 22, 25, 48, 64, 72, 77, 82, 99};


int cautareBinara(int stg, int dr, int nr)
{
    if(stg>dr)
        return -1;
    else
    {
        int mij=(stg+dr)/2;
        if(v[mij]==nr)
            return mij;
        if(nr<mij)
            return cautareBinara(stg,mij-1,nr);
        else
            return cautareBinara(mij+1,dr,nr);
    }
}

void cercuri(int x, int y)
{
   // x=40;
   // y=250;
    for(int i=0; i<n; i++)
    {
        setcolor(WHITE);
        circle(x,y,40);
        char *c=new char;
        itoa(v[i],c,10);
        settextstyle(3, 0, 2);
        int latime=textwidth(c);
        int inaltime=textheight(c);
        outtextxy(x-latime/2, y-inaltime/2, c);
        x+=100;
    }

}

int main()
{
    int nr;
    cout<<"Introduceti numarul pe care il cautati in sir: ";
    cin>>nr;
    initwindow(1000,600);
    cercuri(40,250);
    //setcolor(WHITE);
    //circle(100,60,40);
    getch();
    closegraph();

    return 0;
}