/in/foo.c: In function 'main':
/in/foo.c:16:2: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",max);
  ^~~~~~~~~~~~~~~~
/in/foo.c:14:2: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d ",max);
  ^~~~~~~~~~~~~~~~~
/in/foo.c: In function 'FindMaxNeg':
/in/foo.c:32:9: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return max;
         ^~~