Thread: How to stop user from entering same number twice?

i need to create a program that will accept 5 numerical inputs and determine the highest, and i also need to stop user from using the same number twice and do not count it from the 5 numerical inputs. kindly help me, here is my code

Code:

int number,x,j=5;
int max=0;
int main(){
    do{
    for(int i=0; i<j; i++)
    {
    cout<<"\nInput number :";
    cin>>number;
    if(number>max)
    {
    max = number;
    x=0;
    }

    else if (number == max)
    {
    cout<<"\nDo not use the same number twice! Please Try again!";
    i--;
    x=1;
    }
    }

    }while(x==1);

    cout<<"The highest number is: "<<max;

    getch();
    clrscr();
    return 0;
}