C++ program to print unique elements in an array

Here is a C++ program to print unique elements in an array


 SOURCE CODE OUTPUT

#include<iostream>
using namespace std;
int main()
{
    int a[20][2],num;
    cout<<"How many elements to be stored (max 20) : ";
    cin>>num;
    cout<<"Enter elements of array : ";
    for(int i=0;i<num;i++)
    {
        cin>>a[i][0];
        a[i][1]=0;
    }
    for(int i=0;i<num;i++)
    {
        if(a[i][1]==1)
            continue;
        for(int y=i+1;y<num;y++)
          if(a[y][0]==a[i][0])
          {
              a[i][1]=1;
              a[y][1]=1;
          }
    }
    cout<<"Elements that appears only once : ";
    for(int i=0;i<num;i++)
        if(a[i][1]==0)
           cout<<a[i][0]<<" ";
    return 0;
}

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