c++ how to get a random number

#include <stdio.h>      /* NULL */
#include <stdlib.h>     /* srand, rand */
#include <time.h>       /* time */

  int randomNumber;

  /* initialize random seed: */
  srand (time(NULL));

  /* generate random number between 1 and 10: */
  randomNumber = rand() % 10 + 1;

v1 = rand() % 100;         // v1 in the range 0 to 99
v2 = rand() % 100 + 1;     // v2 in the range 1 to 100
v3 = rand() % 30 + 1985;   // v3 in the range 1985-2014