/in/foo.c: In function 'main':
/in/foo.c:15:30: warning: iteration 13 invokes undefined behavior [-Waggressive-loop-optimizations]
               if(arr[j] > arr[j+1]){
                           ~~~^~~~~
/in/foo.c:14:9: note: within this loop
         for(j = 0;j < 14; j++){
         ^~~