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

#define NUMBER 200000

unsigned int s_seed(void);

int main(void)
{
	unsigned int array[NUMBER];
	register unsigned int different = 0;
	register unsigned int num = 0, same = 0;
	
	for (size_t size = 0; size < NUMBER; size++)
    {
    	array[size] = s_seed();
    	//array[size] =rand();
    	//printf("%u\n", array[size]);
    }
    
    for(size_t size = 0, x = 1; size < NUMBER; size++, x = (size + 1), same = 0)
    {
    	for (; x < NUMBER; x++)
    	{
    		num++;
            if (array[size] == array[x])
            {
                same++;
                break;
            }
    	}
    	if (same == 0)
    	    different++;
    	if (same == 2)
    	    puts("ERROR");
    }
    printf("共生成了%u个种子,不相同的种子值有%u个,共比较了%u次 ", NUMBER, different, num);
    
	getchar();
    return 0;
}

unsigned int s_seed(void)
{
	static time_t add_number = 0;
	int number = 0;
	
	srand((unsigned int)time(0) + add_number - 123);
	add_number = rand() * 0.75;
	switch (rand() % 4)
	{
		case 0:
		    number = rand() % 7778;
		    break;
		    
		case 1:
		    number = rand() * 0.6;
		    break;
		    
		case 2:
		    number = rand() / 7;
		    break;
		    
	    case 3:
	        number = rand() - 138594670;
	}
	
	return (unsigned int)(rand() + add_number + number);
}