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