/in/foo.c: In function 'main':
/in/foo.c:25:25: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
   25 |                         printf("%d",b[i][j]);
      |                         ^~~~~~~~~~~~~~~~~~~~
/in/foo.c:23:26: note: within this loop
   23 |                 for(j=0;j<3;j++)
      |                         ~^~