C :

#include<stdio.h>

    int main()
{
    int T,t;
    scanf("%d",&T);
    t=0;
    while(t<T)

    {
        int n,z;
    scanf("%d",&n);

    z=2*n;
    printf("%d\n",z);
    t=t+1;
    }

}

C++ :

#include<stdio.h>
int main()
{
    int n,T;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%d",&n);
        printf("%d\n",2*n);
    }

    return 0;
}

Pascal :

var n,i,s:longint;
    a:array[0..100000] of longint;
begin
  readln(n);
  for i:=1 to n do
    readln(a[i]);
  for i:=1 to n do
  begin
    s:=a[i]*2;
    writeln(s);
  end;
end.