/in/foo.c: In function 'main':
/in/foo.c:9:11: warning: unused variable 'j' [-Wunused-variable]
 {   int i,j;
           ^
/in/foo.c: In function 'find':
/in/foo.c:33:9: warning: unused variable 'k' [-Wunused-variable]
     int k,flag=0;
         ^