C :

 
#include<stdio.h>
main(){int n,m,s;scanf("%d",&n);while(n--){scanf("%d",&m);s=0;while(m)m&=m-1,s++;printf("%d\n",s);}}        

C++ :

#include<stdio.h>
int main()
{
    int n,m,s,p;
    while(scanf("%d",&n)!=EOF)
    {
        while(n--)
        {
            s=0;
            scanf("%d",&m);
            for(p=0;m!=0;p++)
            {
                s+=m%2;
                m/=2;
            }
            printf("%d\n",s);
        }
    }
    return 0;
}

Pascal :

var
  a:array [1..10000] of longint;
  b,c,d,i,j,k,n:longint;
begin
    readln(n);
    for i:=1 to n do
    begin
    readln(b);
    repeat
        if b mod 2=1 then inc(a[i]);
        b:=b div 2;
    until(b=0);
    end;
    for i:=1 to n do
    writeln(a[i]);
end.