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HDOJ/1012_autoAC.cpp

@@ -0,0 +1,30 @@
+#include <stdio.h>
+double Factorical(int n)
+{
+    int ans=1;int i;
+    double sum=1.0;
+    for(i=1;i<=n;++i)
+    {
+        ans=ans*i;
+        sum+=(double)1/ans;
+    }
+    return sum;
+}
+int main()
+{
+    int i;
+    printf("n e\n");
+    printf("- -----------\n") ;   
+    for(i=0;i<10;i++)
+    {
+         if(i==0)
+             printf("%d %d\n",i,1);
+         else if(i==1)
+              printf("%d %d\n",i,2);
+            else if(i==2)
+                 printf("%d %.1f\n",i,2.5);
+                else 
+                    printf("%d %.9lf\n",i,Factorical(i));
+    }
+    return 0;
+}