foo.c: In function 'main':
foo.c:12:18: warning: unused variable 'b' [-Wunused-variable]
   12 |     int number,a,b,max;
      |                  ^
foo.c:12:16: warning: unused variable 'a' [-Wunused-variable]
   12 |     int number,a,b,max;
      |                ^
foo.c:44:5: warning: 'max' may be used uninitialized [-Wmaybe-uninitialized]
   44 |     printf("%d\n",max);
      |     ^~~~~~~~~~~~~~~~~~
foo.c:12:20: note: 'max' was declared here
   12 |     int number,a,b,max;
      |                    ^~~

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