/in/foo.cc: In function 'int main()':
/in/foo.cc:13:13: error: expected ';' before 'l'
          k++l; 
             ^
/in/foo.cc:17:21: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
     printf("%d",a[k]);
                     ^