diff --git a/README.md b/README.md
index 29e3065..da7ffb9 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,64 @@
-# 123
+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<stdlib.h>
+
+void test01()
+{
+	int num = 0;
+	while (num < 10)
+	{
+		printf("num=%d\n", num);
+		num++;
+	}
+
+
+}
+
+//猜数字
+void test02()
+{
+	//设置随机数的种子
+	srand((unsigned int)time(NULL));//固定代码,必须记
+	//int i = 0;
+	//while (i < 10)
+	//{
+	//	int num=rand() % 100 + 1;//rand()会生成随机数rand对100取余会生成0-99的随机数,再加1就成0-100
+	//	printf("%d\n",num);
+	//	i++;
+	//}
+	int num = rand() % 1000 + 1;
+	int val = 0;
+
+	printf("请您输入一个1000以内的正整数\n");
+	while (1) //()中的1为真,所以会一直循坏
+	{
+
+		scanf("%d", &val);
+
+		if (val > num)
+		{
+			printf("输入大了\n");
+		}
+		else if (val < num)
+		{
+			printf("输入小了\n");
+
+		}
+		else
+		{
+			printf("恭喜您,猜对了!\n");
+			break;
+		}
+
+	}
+}
+
+int main()
+{
+	test02();
+
+	system("pause");
+
+	return 0;
+}