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  1. #include<stdio.h>
  2.  
  3.  
  4. void shuffle(int *deck[]);//提前宣告 
  5. void print  (int *deck[]);//提前宣告 
  6.  
  7. int main()
  8. {
  9.   int  card[100];
  10.   int *deck[100];
  11.   int  i = 0;
  12.  
  13.  // while ( scanf("%d",&(card[i])) != EOF ) 
  14.  // {
  15.  //   deck[i] = &(card[i]);//將card[i]的位址 指定給deck[i] 
  16.  //  i++;
  17.  // }
  18.  
  19.  for (int i=0;i<5;i++)
  20.  {
  21.  	  scanf("%d",&(card[i]));
  22.  	  deck[i] = &(card[i]);	
  23.  }
  24.  
  25.   deck[i] = NULL;        //把deck不要的空間清除 
  26.  
  27.   shuffle(deck);
  28.   print  (deck);  
  29.   return 0;
  30. }
  31.  
  32.  
  33.  //將deck之指標 改變其指向數字 
  34.  void shuffle(int *deck[])
  35.  {
  36.  	  int num=0;  
  37.  	  int i  =0;
  38.       while (deck[i]) //若不為0-->計數 
  39. 	  {
  40. 		     num++;
  41.       }
  42.  	  int A[50]={0};
  43.  	  int B[50]={0};
  44.  	  //奇數個數
  45. 	   if (num%2==1)
  46. 	   {
  47. 	   	   for (int i=0;i<num/2;i++)  //ex：num=9-->9%2=4  012345678 
  48. 	   	   {
  49. 			    A[i]    =*deck[i];     //0~4
  50. 			    B[num-i]=*deck[num-i]; //9~4 
  51. 		   }
  52. 	       A[num/2]=*deck[num/2];//5 
  53.  
  54. 	   	   for (int i=0;i<num/2;i++)  //ex：num=9-->9%2=4  012345678 	       
  55. 	       {
  56. 		       *deck[2*i]  =A[i];       //0 2 4 6 
  57. 		       *deck[2*i+1]=B[i];       // 1 3 5 8    
  58. 	       } 
  59. 	       *deck[num]=A[num/2];  
  60. 	   } 
  61.  }
  62. //將deck之指標  指向數字print出 
  63. void print  (int *deck[])
  64. {
  65. 	// int num= sizeof(deck)/sizeof(deck[0]);
  66. 	 int num=0;   
  67.  	 while (deck[num]==NULL)
  68.  	 {
  69. 	        num++;  
  70. 	 }
  71.  
  72. 	 for (int i=0;i<num;i++)
  73. 	 {   
  74. 	 	  printf("%d" , *deck[i]);
  75. 	 }	  
  76. } 
  77.  
Runtime error #stdin #stdout 0s 10304KB
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stdout
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Standard output is empty
https://ideone.com/gRYeGe
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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