Răspuns:
#include <iostream>
using namespace std;
struct Punct{
int x,y,z;
}P;
int n,R,i, contor;
int main()
{
cout << "n= "; cin >> n;
cout << "R="; cin >> R;
cout << "Dati coordonatele x,y,z a punctelor: " << endl;
for (i=1; i<=n; i++)
{
cout << "pentru punctul " << i << " : ";
cin >> P.x >> P.y >> P.z;
if (P.x*P.x+P.y*P.y+P.z*P.z<=R*R)
++contor;
}
cout << "Din ele in sfera se contin " << contor << " puncte";
return 0;
}
Explicație:
