como ejecutar pcp_recovery_node -h 192.168.1.48 -p 9898 -U pgpool -n 1 y enviar la contraseña

#include <iostream>
#include <string>
using namespace std;

int main()
{
    string pass;
    cin >> pass;
    string command = "echo " + pass + " | pcp_recovery_node -h 192.168.1.48 -p 9898 -U pgpool -n 1";
    cout << command;
    system(command.c_str());
}