W_churchill @ 2020-05-08 19:33:07

else if (T == 8) 
    {
        cout<<5*2*3.141593<<" ";             
        cout<<5*5*3.141593<<" ";
        cout<<1.0*double(4/3)*3.141593*125.0<<" ";
        return 0;
} 

else if (T == 13) 
{
        int sum=4*4*4*3.141593;
        sum+=10*10*10*3.141593;
        cout<<prime(sum)<<endl;
        return 0;
} 

by yekgg @ 2020-12-04 22:10:26

T8

int r=5;
double pi=3.141593;
cout<<2*3.141593*r<<endl;
cout<<r*r*3.141593<<endl;
cout<<4.0/3*3.141593*r*r*r<<endl;
break;

T13

int r1=4,r2=10;
double pi=3.141593; doublev=4.0/3*pi*r1*r1*r1+4.0/3*pi*r2*r2*r;
v=pow(v,1.0/3);
printf("%.0lf\n",v);
break;  ```

by yekgg @ 2020-12-04 22:11:25

pi 取 3.141593