Ответ:

#include <iostream>

using namespace std;

int main()

{

string name[5]{};

string k;

int data[5];

int numb[5];

const int n=3;

for (int i = 0; i < n; i++) {

 cout << "Vvedite "<<i+1<<"-oe  FIO: ";

 cin >> name[i];

 cout << "Vvedite " << i + 1 << "-yo  data: ";

 cin >> data[i];

 cout << "Vvedite " << i + 1 << "-iy  nomer: ";

 cin >> numb[i];

}

cout << "Vvedite iskomoe fio: ";

cin >> k;

for (int i = 0; i < n; i++) {

 if (k == name[i]) {

  cout << "Data poluch: " << data[i] << "n" <<"Nomer: "<< numb[i];

 }

}

}