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Re:为何呀RE???In Reply To:为何呀RE??? Posted by:xiaolijian at 2010-07-28 20:25:40 > #include <stdio.h>
> #include <math.h>
> #define Pi 3.14159265358979323846
>
> int main()
> {
> int i=0,j=0,n,m;
> double R,r[1000];
> scanf("%d",&m);
> for(i=0;i<m;i++)
> {
> scanf("%lf %d",&R,&n);
> r[i]=R*sin(Pi/(1.0*n))/(1.0+sin(Pi/(1.0*n)));
> }
> for(i=0;i<m;i++)
> {
> printf("Scenario #%d:\n%.3lf\n\n",i+1,r[i]);
> }
> return 0;
> }
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