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Re:到底是什么错啊？？有高手能告诉我吗？？谢谢啊In Reply To:Re:到底是什么错啊？？有高手能告诉我吗？？谢谢啊 Posted by:elf788544 at 2005-08-19 20:35:04 > #include<iostream>
> #include<stdio.h>
> #include<cmath>
> using namespace std;
> int main()
> {
> int n,i,test;
> double R;
> cin>>test;
> for(i=1;i<=test;i++)
> {
> cin>>R>>n;
> printf("Scenario #%d:\n%.3f\n\n",i,R*sin(acos(-1)/n)/(1+sin(acos(-1)/n)));
> }
> return 0;
> }
> 应该是这样的!!!!!!!!!!
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