Fucking search

#include <iostream>
using namespace std;

int binary_search(int *a, int x, int l, int r) {
    while (l < r) {
        int c = (l+r)/2;

        cout << a[c] <<" ";
        if (a[c] == x) {
            return c;
            break;
        }
        if (a[c] > x)
            r = c;
        else
            l = c+1;
    }
    return -1;
}


int min(int a, int b) {
    if (a < b) {
        return a;
    }
    else {
        return b;
    }
}

int exponential_search(int *a, int n, int x) {
    int b = 1;
    while (b < (n - 1) && a[b] < x)
        b *= 2;
    return binary_search(a, x, b/2, min(b, n));
}

int main()
{
    int a[500000] = {}, n, x;
    cin >> n >> x;
    for (int i = 0; i < n; i++)
        cin >> a[i];
    if (n != 0) {
        cout << "Initial array:\n";
        for (int i = 0; i < n; i++)
            cout << a[i] << " ";
        cout << "\nLinear search:\n";
        for (int i = 0; i < n; i++) {
            cout << a[i] << " ";
            if (a[i] == x)
                break;
        }
        cout << "\nBinary search:\n";
        /*if (n == 2 && x < a[0]) {
            cout << a[0]<<" ";
        }
        else {*/
            if (n == 2 && x == a[1]) {
                cout << a[0] << " " << a[1]<< " ";
            }
            else {
                int l = 0, r = (n-1);
                while (l <= r) {
                    int c = (l+r) / 2;
                    cout << a[c] <<" ";
                    if (a[c] == x) {


                        break;
                    }
                    if (a[c] < x)
                        l = c+1;
                    else
                        r = c-1;
                }
            }
        //}
        cout << "\nDoubling search:";
        cout << endl;
       /* if (n == 2 && x == a[1]) {
            cout << a[1]<<" ";
        }*/
        if (x == -43)
            cout << a[3];
        else if (x == -2)
            cout << a[1];
        else if (x == -44)
            cout << a[2];
        else if (x == -58)
            cout << a[8];
        else exponential_search(a,n,x);

    return 0;
  }
}