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srand()                  Set Random Starting Point

 #include   <stdlib.h>                   Required for declarations only

 void       srand(seed);
 unsigned   seed;                        Seed for random-number generation

    srand() provides the starting point for the series of pseudorandom
    integers generated by the function rand().  The generator is
    reinitialized by calling srand() with 1 as the 'seed' argument; any
    other value of 'seed' sets the generator to a random starting point.

    Returns:    There is no return value.

  -------------------------------- Example ---------------------------------

    The following statements generate 10 random numbers.

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

           int i, seed = 20;
           int num;

           main()
           {
                srand(seed);
                printf("     RANDOM NUMBERS \n");
                for (i = 1; i <= 10; i++)
                    printf("index: %d,  random number: %d \n",i,rand());
            }