array variable not working, x[0] is getting over written with value of xx[1]

[9916340778]

#include<stdio.h>
#include<iostream>
#include<graphics.h>
#include<conio.h>
#include<math.h>
using namespace std;

using namespace std;
main()
{
int x,y,leftbit[]={0,0},rightbit[]={0,0},topbit[]={0,0},bottombit[]={0,0},flag=0,i,xmin,xmax,ymin,ymax;
int xx[1],yy[1],xb[1],xt[1],yl[1],yr[1],m;
int a[3],o[3];

cout<<"Enter the co-ordinates of the line ";

cout<<"\nPoint A :- ";
cin>>xx[0];
cin>>yy[0];

cout<<"\nPoint B :- ";
cin>>xx[1];//xx[0] is getting over written at xx[1]
cin>>yy[1];

initwindow(700,700);

line(xx[0],yy[0],xx[1],yy[1]);

cout<<xx[0]<<" "<<yy[0]<<"\n";
cout<<xx[1]<<" "<<yy[1];

[weaknessforcats]

xx is an array of one element: int xx[1].

That means xx[0] is the only element yet you cin >> xx[1]. There is no xx[1] so you corrupt your local stack frame.