Duplicate values removal from array

Duplicate values removal  from array:

//removal duplicate values from array 

#include<iostream>

using namespace std;

void main()

{

int a[8]={1,2,3,3,4,1,2,1};

int b[8]={0,0,0,0,0,0,0,0};

b[0]=a[0];

for(int i=1;i<8;i++)

{

int counter=0;

for(int j=0;j<i;j++)

{

if(a[i]==b[j])

counter++;

}

if(counter>0)

b[i]=0;

else

b[i]=a[i];

}

for(int k=0;k<8;k++)

{

if(b[k]!=0)

cout<<b[k]<<" ";

}

cout<<endl;

}

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