C语言实现随机抽取纸牌

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


# define num_rates ((int) (sizeof(value)/sizeof(value[0])))
# define initial_balance 100.00
 
#define num_suits 4
#define num_ranks 13
 
int main(){

bool in_hand[num_suits][num_ranks] = {false};
int num_cards,rank,suit;

const char rank_code[] = { '2','3','4','5','6','7','8','9',
    't','j','q','k','a'};
const char suit_code[] = { 'c','d','h','s'};
printf("enter number\n");
scanf("%d",&num_cards);

printf("your hands\n");
while(num_cards>0){
 suit = rand()%num_suits;
 rank = rand()%num_ranks;
 if(!in_hand[suit][rank]){
 in_hand[suit][rank] = true;
 num_cards--;
 printf(" %c%c",rank_code[rank],suit_code[suit]);
 }
}
printf("\n");
return 0;
}