程序模拟洗牌发牌运行问题

Question

写了一个c语言程序编译通过了但运行不出结果

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#define N 52
#define NumofPlayer 3

typedef struct card
{
    char suit[10];
    char face[10];
}CARD;

void New(CARD newCard[N],char suit[4][10],char face[13][10]);
void Shuffle(CARD newCard[N],CARD a[N],char suit[][10],char face[][10]);
void Deal(CARD a[N],int n);

int main()
{
    CARD card[N];
    char suit[4][10] = {"Spades","Hearts","Clubs","Diamonds"};
    char face[13][10] = {"A","2","3","4","5","6","7","8",
                        "9","10","Jack","Queen","King"};
    CARD newCard[N];
    New(newCard,suit,face);
    Shuffle(newCard,card,suit,face);
    Deal(card,NumofPlayer);
    
    return 0;
}
void New(CARD newCard[N],char suit[4][10],char face[13][10])
{
    int i,j;
    int k = 0;
    for(i = 0;i < 4;i++)
    {
        for(j = 0;j < 13;j++)
        {
            strcpy(newCard[k].suit , suit[i]);
            strcpy(newCard[k].face , face[j]);
            k++;
        }
    }
}
void Shuffle(CARD newCard[N],CARD a[N],char suit[][10],char face[][10])
{
    int i,j;
    int flag;
    int k[52];
    for(i = 0;i < N;i++)
    {
        flag = 1;
        srand(time(NULL));
        k[i] = rand() %52;
        for(j = 0;j <= i;j++)
        {
            if(k[i] == k[j])
            flag = 0;
            i--;
        }
        if(flag)
        {
            a[i] = newCard[k[i]];
        }
    }
}
void Deal(CARD a[N],int n)
{
    int i,j;
    int k = 0;
    for(i = 0;i < n;i++)
    {
        printf("Player %d:",i + 1);
        for(j = 0;j < N/n;j++)
        {
            printf(" %s\t%s |",a[k].suit,a[k].face);
            k++;
        }
        printf("\n");
    }
}

编译通过了，但运行时没有任何输出

编程模拟洗牌和发牌，其中有4种花色13种牌面共52张牌，每张牌包括两个字符型数组类型的数据成员

Answer 1

下面这段代码应该有点问题，i--和j++很有可能会等于同一个值
这样的话k[i] == k[j] 都会成立，flag会一直是0

for(j = 0;j <= i;j++)
        {
            if(k[i] == k[j])
            flag = 0;
            i--;
        }