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## Re:两个代码就是加1的位置不一样，为什么一个对一个错？

Posted by kimi940211 at 2014-02-23 22:00:38 on Problem 1423
In Reply To:两个代码就是加1的位置不一样，为什么一个对一个错？ Posted by:kimi940211 at 2014-02-23 22:00:19
```> #include<iostream>
> #include<cmath>
> using namespace std;
> double e = 2.7182818284590452354, pi = 3.141592653589793239;
>
> int main()
> {
> 	int testnumber;
> 	cin >> testnumber;
> 	int i;
> 	for (i = 0; i < testnumber; i++)
> 	{
> 		int n;
> 		cin >> n;
> 		double m = log10(2 * pi*n) / 2.0 + n*(log10(n / e)) + 1;
> 		int answer = (int)m;
> 		cout << answer << endl;
> 	}
> 	return 0;
> }
> 上面是错的，下面是对的
> #include<iostream>
> #include<cmath>
> using namespace std;
> double e = 2.7182818284590452354, pi = 3.141592653589793239;
>
> int main()
> {
> 	int testnumber;
> 	cin >> testnumber;
> 	int i;
> 	for (i = 0; i < testnumber; i++)
> 	{
> 		int n;
> 		cin >> n;
> 		double m = log10(2 * pi*n) / 2.0 + n*(log10(n / e)) ;
> 		int answer = (int)m;
>                 answer++;
> 		cout << answer << endl;
> 	}
> 	return 0;
> }
```

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