二叉树代码bug

$ clang -Wall bintree.cbintree.c:28:3: warning: equality comparison result unused *T==NULL;~~^~~~~~bintree.c:28:3: note: use \u0026#39;=\u0026#39; to turn this equality comparison into an assignment*T==NULL; ^~ =bintree.c:41:13: warning: format specifies type \u0026#39;int\u0026#39; but the argument has type \u0026#39;BiTree\u0026#39; (aka \u0026#39;struct BiTNode *\u0026#39;) printf("%c",T); ~~ ^2 warnings generated.


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