Update README.md

README.md

@@ -1,2 +1,58 @@
 # dadsadsad
 
+#include<stdio.h>
+#include<iostream>
+using namespace std;
+typedef struct bi{
+	char data;
+	struct bi *lchild,*rchild;
+}tree,*btree;
+
+void csh(bi* &d){
+	char ch;
+	cin >> ch;
+	if(ch == '#') d=NULL;
+	else
+	{
+		d = new bi;
+		d->data=ch;
+		csh(d->lchild);
+		csh(d->rchild);
+	}
+}
+
+void xx(bi* &t){
+	if(t){
+		cout << t->data;
+		xx(t->lchild);
+		xx(t->rchild);
+	}
+}
+
+void zx(bi* &t){
+	if(t){
+		zx(t->lchild);
+		cout << t->data;
+		zx(t->rchild);
+	}
+}
+
+void hx(bi* &t){
+	if(t){
+		hx(t->lchild);
+		hx(t->rchild);
+		cout << t->data;
+	}
+}
+
+int main(){
+	btree d;
+	cout << "通过先序遍历创建二叉树,#表示空节点" << endl;
+	csh(d);
+	xx(d);
+	cout << "" <<endl;
+	zx(d);
+	cout << "" <<endl;
+	hx(d);
+	cout << "" <<endl;
+}