/in/foo.c: In function 'min':
/in/foo.c:25:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/in/foo.c: In function 'main':
/in/foo.c:29:2: warning: 'm' is used uninitialized in this function [-Wuninitialized]
  printf("%d",min(m));
  ^~~~~~~~~~~~~~~~~~~
/in/foo.c:30:2: warning: 'n' is used uninitialized in this function [-Wuninitialized]
  printf("%d",min(n));
  ^~~~~~~~~~~~~~~~~~~