/in/foo.c: In function 'main':
/in/foo.c:10:2: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",t);
  ^~~~~~~~~~~~~~
/in/foo.c: In function 'findmax':
/in/foo.c:28:9: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return t;
         ^