show a simple menu

👍 g++ database.cpp && ./a.out
1. Add 2. Find 3. Modify a rec 4. Exit
Enter an option: 1
Enter an option: 1
Enter an option: 2
Enter an option: 1
Enter an option: 3
Enter an option: 4

👍 cat database.cpp
#include <iostream>
using namespace std;

void run() {
  char option[5];
  cout << "1. Add "
       << "2. Find "
       << "3. Modify a rec "
       << "4. Exit\n";
  cout << "Enter an option: ";
  while (cin.getline(option, 4)) {
    if (*option == '1') {
    } else if (*option == '2') {
    } else if (*option == '3') {
    } else if (*option != '4')
      cout << "Wrong option\n";
    else return;
    cout << "Enter an option: ";
  }
}

int main() {
  run();
}

    

ch 1.10 CASE STUDY: RANDOM ACCESS FILE p43 of