diff --git a/README.md b/README.md
index 11dff9b..8167f8e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,31 @@
 # include
+//一统计个数 
+#include<stdio.h>
+int main()
+{
+	char ch[10];
+	gets(ch);
+	int big=0, small=0, num=0, blank=0, other=0;
+	int i;
+	for(i = 0; i < 10; i ++)
+	{
+		if(ch[i] >= 'a' && ch[i] <= 'z')
+		small ++;
+		else if(ch[i] >='A' && ch[i] <= 'Z')
+		big ++;
+		else if(ch[i] == ' ')
+		blank ++;
+		else if(ch[i] >= '0' && ch[i] <= '9')
+		num ++;
+		else
+		other ++;
+	}
+	printf("大写字母：%d\n",big);
+	printf("小写字母：%d\n",small);
+	printf("数字%d\n",num);
+	printf("空格%d\n",blank);
+	printf("其他字符：%d\n",other);
+}
 #include <stdio.h>
 //二、判断素数
 int main() {
@@ -21,3 +48,31 @@ int main() {
  
  return 0;
 }
+//四输出菱形图形 
+#include<stdio.h>
+#include<math.h>
+int main()
+{
+    int n, i, j, k, m;
+    printf("请输入一个整数：\n");
+    scanf("%d", &n);
+     printf("图形为")；
+    m = 2 * n - 1;
+     for(i = 1; i <= n; i ++)
+         {
+              for(j = 1; j <= abs(i - n); j ++)
+                printf(" ");
+               for(k = j - 1; k < m - abs(i - n); k ++)
+                printf("*");
+               printf("\n");
+         }
+         for(i = n - 1; i >= 1; i --)
+             {
+                for(j = 1; j <= abs(i - n); j ++)
+                    printf(" ");
+                for(k = j - 1; k < m - abs(i - n); k ++)
+                    printf("*");
+                 printf("\n");
+               }
+    return 0;
+}
\ No newline at end of file