foo.c: In function 'bubble':
foo.c:5:15: warning: unused variable 'j' [-Wunused-variable]
    5 |         int i,j;
      |               ^
foo.c: In function 'main':
foo.c:47:9: warning: 'min' may be used uninitialized [-Wmaybe-uninitialized]
   47 |         printf("%d",max-min);
      |         ^~~~~~~~~~~~~~~~~~~~
foo.c:39:13: note: 'min' was declared here
   39 |         int min,max;
      |             ^~~
foo.c:47:9: warning: 'max' may be used uninitialized [-Wmaybe-uninitialized]
   47 |         printf("%d",max-min);
      |         ^~~~~~~~~~~~~~~~~~~~
foo.c:39:17: note: 'max' was declared here
   39 |         int min,max;
      |                 ^~~

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