struct client{
int index;
string name;
string surname;
string city;
int year;
float sell;};


client * delete(client array[], int &n){
    int j=0;
    int i;
int a=0;
int found=0;
client *vet;
for(i=0; i<n; i++){
    vet=new client[a+1];
    for(j=0;j<a;j++){
        if(array[i].index==vet[j].index){
            found=1;

            break;}}

    if(found==0){
        vet[a]=array[i];
        a++;}
    found=0;}
    n=a;
    return vet;
}