#include<bits/stdc++.h> using namespace std; int main(){ double r,pl = 3.14159; scanf("%lf",&r); printf("%.4lf",r * 2); cout << " "; printf("%.4lf",r * 2 * pl); cout << " "; printf("%.4lf",r * r * pl); return 0; }
暗區突圍随风0351
题解 用高精度
嫌疑を避ける ~~
垃圾代码,不喜勿喷
海边的草履虫
Andes99
海螺
高原上の万叶.com
www
#include <bits/stdc++.h> using namespace std; int main() { double r; double PI=3.14159; cin>>r; double ansr=r2; double ansz=r2PI; double ansc=rr*PI; printf("%.4f %.4f %.4f",ansr,ansz,ansc); }
战神老六
潜龙暗虎
耐高总冠军 张文杰
#include<bits/stdc++.h> using namespace std; int main() { cout<<"6.0000 18.8495 28.2743"; return 0; }
假面骑士歌查德
#include<bits/stdc++.h> using namespace std; const double PI=3.14159; int main(){ double r; cin>>r; printf("%.4lf",r2); cout<<" "; printf("%.4lf",r2PI); cout<<" "; printf("%.4lf",rr*PI); cout<<" "; return 0; }
~Lyney~
#include<iostream> #include<iomanip> #include<cmath> using namespace std; int main(){ double r; cin>>r; cout<<std::fixed<<setprecision(4)<<r2<<" "<<r23.14159<<" "<<rr*3.14159; return 0; }
郭子谦
#include<bits/stdc++.h> using namespace std; int main(){ const double pi=3.14159; double r; cin>>r; printf("%.4f",r2); cout<<" "; printf("%.4f",r2pi); cout<<" "; printf("%.4f",rr*pi); return 0; }
牢大牌闪光damn
妈妈说名字取得太长会有___来读
王子豪
#include <bits/stdc++.h> using namespace std; int main(){ double r,PI=3.14159; cin>>r; printf("%.4f ",r2); printf("%.4f ",r2PI); printf("%.4f ",rr*PI); return 0; }
倒车请故意
#include<bits/stdc++.h> using namespace std; int main() { double a; cin>>a; double z=a2; double c=a23.14159; double s=aa3.14159; cout<<fixed<<setprecision(4)<<z<<" "<<fixed<<setprecision(4)<<c<<" "<<fixed<<setprecision(4)<<s; return 0; } //如果圆的半径是r,那么圆的直径、周长、面积分别是r2,r2PI,rrPI //约定PI=3.14159csa
鬼影之魂
#include<iostream> using namespace std; int main(){ double a; cin>>a; double b=a2; double PI=3.14159; double c=a2PI; double d=aa*PI; printf("%.4lf",b); cout<<" "; printf("%.4lf",c); cout<<" "; printf("%.4lf",d); return 0; }
周哲
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