how to solve 4.4

#include <iostream>
#include <conio.h>
#include <stdio.h>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
int a[20], i, j, k ,n;
cout<<" enter aray size : ";
cin>>n;
cout<<" enter aray "<<n<<" elemen : \n";
for(i=0;i<n;i++){
cin>>a[i];
}

cout<<" new aray elemen are : ";
for(i=0;i<n;i++){
for(j=i+1;j<n;){
if(a[j]==a[i]){
for(k=j;k<n;k++){
a[k]=a[k+1];
}
n--;
}
else{
j++;
}
}
}
for(i=0;i<n;i++){
cout<<a[i]<<" ";
}

}

SUBPROGRAM :

#include <iostream>

#include <conio.h>

#include <stdio.h>

using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

void masuk(int a[20]){

int i,n,j,k;

for(i=0;i<n;i++){

 cin>>a[i];

 }

cout<<" new aray elemen are : ";

for(i=0;i<n;i++){

 for(j=i+1;j<n;){

  if(a[j]==a[i]){

   for(k=j;k<n;k++){

    a[k]=a[k+1];

   }

   n--;

  }

  else{

   j++;

  }

 }

}

for(i=0;i<n;i++){

 cout<<a[i]<<" ";

}

}

int main(int argc, char** argv) {

int a[20], i, j, k ,n;

cout<<" enter aray size : ";

cin>>n;

cout<<" enter aray "<<n<<" elemen : \n";

masuk(a);

}