Update README.md

README.md

@@ -1,2 +1,117 @@
-# function
+//字符分类统计
+~~~
+#include<stdio.h>
+int a=0,b=0,c=0,d=0,e=0;
+void fun(char ch[])
+{
+	for(int i = 0; i < 10; i ++)
+	{
+		if(ch[i]>='A'&&ch[i]<='Z') a++;
+		else if(ch[i]>='a'&&ch[i]<='z') b++;
+		else if(ch[i]>='0'&&ch[i]<='9') c++;
+		else if(ch[i]==' ')d++;
+		else e++;
+	}
+}
+int main()
+{
+	char ch[10];
+	scanf("%s",ch);
+	fun(ch);
+	printf("majuscule=%d\nb=%d\nnum=%d\nblank=%d\nothers=%d",a,b,c,d,e);
+	return 0;
+} 
+~~~
 
+//判断数字类型 
+
+~~~
+#include<stdio.h>
+#include<math.h>
+int fun(int a)
+{
+	int ans = 0;
+	for(int i = 2; i <= sqrt(a); i++)
+	{
+		if(a%i==0)
+		{
+			ans = 1;
+			break;
+		}
+	}
+	return ans;
+}
+int main()
+{
+	int a;
+	scanf("%d",&a);
+	int ans = fun(a);
+	if(ans == 1) printf("NO");
+	else printf("YES");
+}
+~~~
+
+//求斐波那契数列
+
+~~~
+#include<stdio.h>
+int fib(int n)
+{
+	if(n==1||n==2) return 1;
+	else return  fib(n-1)+fib(n-2);
+}
+int main()
+{
+	int n;
+	scanf("%d",&n);
+	int ans = 0;
+	ans = fib(n);
+	printf("%d",ans);
+	return 0;
+ } 
+ ~~~
+
+//打印*号
+
+~~~
+#include<stdio.h>
+void Print(int m)
+{
+	for(int i = 1; i <= m; i ++)
+	{
+		printf("*");
+	}
+	for(int i = m-1; i >= 1; i --)
+	{
+		printf("*");
+	}
+}
+void PrintSpace(int m)
+{
+	for(int i = 1; i <= m; i ++)
+	{
+		printf(" ");
+	}
+}
+int main()
+{
+	int n;
+	scanf("%d",&n);
+	for(int i = 1; i <= n;i ++)
+	{
+		PrintSpace(n-i);
+		Print(i);
+		PrintSpace(n-i);
+		printf("\n");
+	}
+	for(int i = n-1; i >=1;i--)
+	{
+		PrintSpace(n-i);
+		Print(i);
+		PrintSpace(n-i);
+		printf("\n");
+	}
+	return 0;
+} 
+
+~~~