一個簡單的C++隨機產生彩票號碼的代碼

#include <stdio.h>

include <stdlib.h>
include <time.h>
include <stdbool.h>
using namespace std;
bool checkequal(int a,int b);
void printnum (int n,int a);
int main()
{
        unsigned int seed;
        int i,random;
        int num[10]={0,0,0,0,0,0,0,0,0,0};
        printf("請輸入要產生幾組雙色球號:");
        scanf("%d",&i);
        while (i>0)//輸入的數字小于等于0則退出
        {
            for(int j = 0;j<i;j++)
            {
                srand(((int)time(NULL))*10);
                for (int k = 0;k<10;k++)//循環產生10個數字
                {

                    random=rand();
                    srand(clock());
                    while (random<1 || random>35 || checkequal(num,random))
                    //如果產生的數字超出范圍 或者已經存在了則重新產生
                        random=rand();
                    num[k]=random;

                }
                printnum(j,num);

            }
        printf("請輸入要產生幾組雙色球號:");
        scanf("%d",&i);
        }

        return 0;

}
bool checkequal(int a,int b)
{
    for (int i = 0;i<10;i++)
    {
        if (b==(a+i))
            return true;
    }
    return false;
}
void printnum (int n,int a)
{
    printf("第%d組雙色球號：",n+1);
    for (int i = 0;i<10;i++)
    {
        printf("%d ",(a+i));

    }
    printf("\n");
}</pre>