Generate random number: how to use rand : Random « Math « C / ANSI-C





Generate random number: how to use rand

 Generate random number: how to use rand


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

int main ()
{
  /* initialize random generator */
  srand ( time(NULL) );

  /* generate random numbers */
  printf("RAND_MAX = ", RAND_MAX);
  
  printf ("A number between 0 and RAND_MAX : %d\n", rand());
  
  printf ("A number between 0 and 99: %d\n", rand() % 100);
  
  printf ("A number between 0 and 9: %d\n", rand() % 10);

  return 0;
}

           
       










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