这个程序什么问题？

green0sky

/* Deals a random hand of cards */
#include <stdbool.h> /* C99 only */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define NUM_SUITS 4
#define NUM_RANKS 13

int main(void)
{
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'};

srand((unsigned) time(NULL));

printf("Enter number of cards in hand: ");
scanf("%d", &num_cards);

printf("Your hand:");
while (num_cards>0){
suit=rand()%NUM_SUITS;
suit=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;
}

这是书上的一道例题，不知为什么我一运行就出错？

flyingeagle1015

1. while (num_cards>0){
   
2. suit=rand()%NUM_SUITS;
   
3. [color=Red]suit[/color]=rand()%NUM_RANKS;  // 这里应该是rank吧
   
4. if(!in_hand[suit][rank]){
   
5.   in_hand[suit][rank]=true;
   
6.   num_cards--;
   
7.   printf(" %c%c", rank_code[rank], suit_code[suit]);
   
8. }

复制代码

lenky0401

额 lz可以学一下如何做调试 这样对于一些简单问题 以后可以自己解决问题
linux下调试用gdb
http://www.gnu.org/software/gdb/

hangkong77

支持3楼 自己动手丰衣足食:wink: