生成随机数

#include <stdio.h>

static unsigned long int next = 1;
void my_srand(unsigned int seed)
{
    next = seed;
}

int my_rand(void)
{
    next = next * 1103515245 + 12345;
    return (unsigned int)next / 65536 % 32768;
}

int main(void)
{
    int count;
    unsigned seed;
    while (scanf("%u", &seed) == 1)
    {
        my_srand(seed);
        for (count = 0; count < 5; count++)
            printf("%hd\n", my_rand());
        printf("q to quit:\n");
    }
    puts("done!");
    return 0;
}