C语言随机数rand()和srand()使用

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

int main() {
    int a = rand();
    printf("%d", a);
    putchar(10);

    int b;
    srand((unsigned) time(NULL));
    b = rand();
    printf("%d\t", b);
    return 0;
}