/in/foo.c: In function 'print':
/in/foo.c:22:11: warning: unused variable 'node' [-Wunused-variable]
     Node *node = num;
           ^~~~
/in/foo.c: In function 'CtoF':
/in/foo.c:102:5: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
     printf("%d",b/x);
     ^~~~~~~~~~~~~~~~