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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3. #include <string.h>
  4.  
  5. struct kunde
  6. {
  7.     int kdn_Nr;
  8.     char vorName[21];
  9.     char nachName[21];
  10. };
  11. struct buch
  12. {
  13.     int buch_Nr;
  14.     char buch_Titel[21];
  15.     char buch_Autor[21];
  16.     struct kunde *ausleih_cmt;
  17. };
  18.  
  19.  
  20. main()
  21. {
  22.     int x;
  23.     int int_auswahl=1;
  24.     int check_kunde;
  25.     struct kunde struct_kunde[500]={NULL};
  26.     struct kunde *ptr_kunde[500]={NULL};
  27.     struct buch struct_buch[1000]={NULL};
  28.     struct buch *ptr_buch[1001]={NULL};
  29.  
  30.     for(x=0;x<=999;x++)
  31.     {
  32.         if(x<=499)
  33.             ptr_kunde[x]=&struct_kunde[x];
  34.  
  35.         ptr_buch[x]=&struct_buch[x];
  36.     }
  37.  
  38.     ptr_buch[0]->ausleih_cmt=ptr_kunde[0];
  39.     Ausleihliste(ptr_buch);
  40.     return EXIT_SUCCESS;
  41. }
  42.  
  43.  
  44. void Ausleihliste(struct buch *ptr_buch[])
  45. {
  46.     int x;
  47.     printf("---------------------------\n");
  48.     for(x=0;x<=999;x++)
  49.         {
  50.             printf( "ptr_buch[ %d ]->buch_Nr = %d\n", x, ptr_buch[x]->buch_Nr );
  51.             if(ptr_buch[x]->buch_Nr=='\0') {
  52.  
  53.                 puts( "break;" );
  54.                 break;
  55.             }
  56.             else if(puts( "else if reached." ), ptr_buch[x]->ausleih_cmt->kdn_Nr!='\0')
  57.             {
  58.                 printf("%-10d%-10s%-10s%-10d%-10s%-10s\n",
  59.                     ptr_buch[x]->buch_Nr,
  60.                     ptr_buch[x]->buch_Autor,
  61.                     ptr_buch[x]->buch_Titel,
  62.                     ptr_buch[x]->ausleih_cmt->kdn_Nr,
  63.                     ptr_buch[x]->ausleih_cmt->nachName,
  64.                     ptr_buch[x]->ausleih_cmt->vorName);
  65.             }
  66.         }
  67.     printf("---------------------------\n\n");
  68. }
Success #stdin #stdout 0.01s 1680KB
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stdin
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Standard input is empty
stdout
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---------------------------
ptr_buch[ 0 ]->buch_Nr = 0
break;
---------------------------
https://ideone.com/7wsgih
language:
C (gcc 8.3)
created:
12 years ago
visibility:
secret

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