/in/foo.c: In function 'main':
/in/foo.c:8:9: warning: unused variable 'j' [-Wunused-variable]
     int j=0;
         ^
/in/foo.c:32:5: warning: 'result' may be used uninitialized in this function [-Wmaybe-uninitialized]
     printf("%d",result);
     ^~~~~~~~~~~~~~~~~~~