/in/foo.c: In function 'main':
/in/foo.c:5:26: error: redefinition of 'sn'
     int a,n,i,sn=0,ten=0,sn=0;
                          ^~
/in/foo.c:5:15: note: previous definition of 'sn' was here
     int a,n,i,sn=0,ten=0,sn=0;
               ^~