como ejecutar pcp_recovery_node -h 192.168.1.48 -p 9898 -U pgpool -n 1 con contraseña

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *argv[]) {
 
  char p[100] = "pcp_recovery_node -h 192.168.1.48 -p 9898 -U pgpool -n 1";
  char pass[100] = "";
 
  printf("\n\n  %s\n\n", p);
 
  FILE *f1;
 
  f1 = popen(p, "r");
 
  while (fgets(pass, sizeof(pass), f1) != NULL) {
    printf("%s", pass);
  }
 
  return 0;
}