linux rand application

code:

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

   #define random_1(a, b) ((rand()%(b - a)) + a)
   #define random_2(a, b) ((rand()%(b - a + 1)) + a)

   int main(int argc, char **argv)
   {
      srand((int)time(NULL));
      int arr[];
      for(int i = ; i < ; i++){
          arr[i] = random_1(, );
      }

      for(int i = ; i < ; i++){
          printf("%d\t", arr[i]);
      }

      return ;
  }

https://www.cnblogs.com/tonyc/p/7732119.html