显示比正常更多结果的数组

this is my code:

这是我的代码:

#include <iostream>
using namespace std;

int main()
{
  char character;
  int x;
  cout << "Input a character: " ;
  cin >> character;
  x = int(character);
  cout << "Its integer value is: " << x << endl;
  int arr[7], i=0,j;
  while(x>0)
  {
    arr[i]=x%2;
    i++;
    x=x/2;
  }
  cout << "Its Binary format is: ";
  for (j=i; j>=0;j--)
  {
    cout<<arr[j];
  }
  return 0;
}
#include <iostream