/in/foo.c: In function 'poww':
/in/foo.c:8:13: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
         if(b&1!=0)
             ^
/in/foo.c: In function 'main':
/in/foo.c:17:17: warning: unused variable 'l' [-Wunused-variable]
     int k,p,n,i,l,q,sum=0;
                 ^
/in/foo.c:17:15: warning: unused variable 'i' [-Wunused-variable]
     int k,p,n,i,l,q,sum=0;
               ^