ADD file via upload

Untitled1.cpp

@@ -0,0 +1,18 @@
+#include<stdio.h>
+
+int factorial(int n)
+{
+	if(n==0)
+	return 1;
+	return n*factorial(n-1);
+}
+
+int main()
+{
+	int n,x;
+	printf("请输入你想要求的阶乘的数：");
+	scanf("%d",&n);
+	x=factorial(n);
+	printf("%d的阶乘是%d\n",n,x);
+	return 0;
+}