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printf和cout混用，缓冲区不同，一个有，一个没有，出错正常。In Reply To:WA 原因WHY! Posted by:123456sb at 2007-08-15 22:41:39 > WA 的!@
> #include<iostream.h>
> #include<stdio.h>
> #include<math.h>
> void main(){
> int number,n;
> double R,r,temp;
> double re[10000];
> cin>>number;
> for(int i=1;i<=number;i++){
> cin>>R>>n;
> r=(sin(acos(-1)/n)*R)/(1+sin(acos(-1)/n));
> re[i]=r;
> }
> for(i=1;i<=number;i++){
> //printf("Scenario #%d:\n",i);
> cout<< "Scenario #"<<i<<":"<<endl;
> printf("%.3f\n\n",re[i]);
> }
> }
> AC 的!@
> #include<iostream.h>
> #include<stdio.h>
> //#define pi 3.14159265358979323846
> #include<math.h>
> void main(){
> int number,n;
> double R,r,temp;
> double re[10000];
> cin>>number;
> for(int i=1;i<=number;i++){
> cin>>R>>n;
> r=(sin(acos(-1)/n)*R)/(1+sin(acos(-1)/n));
> re[i]=r;
> }
> for(i=1;i<=number;i++){
> printf("Scenario #%d:\n",i);
> //cout<< "Scenario #"<<i<<":"<<endl;
> printf("%.3f\n\n",re[i]);
> }
> }
>
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