#include <stdio.h>
#include <libpq-fe.h>
int main() {
  int lib_ver = PQlibVersion();
  printf("Version of libpq: %d\n", lib_ver);
  printf("Version of libpq: %d\n", lib_ver);
  printf("Version of libpq: %d\n", lib_ver);
  return 0;
}