2020/13.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4
   5 #define MAXLINE 1000
   6 #define MAXBAGS 1000
   7
   8 struct bag {
   9         char *color;
  10         struct baglist *above;
  11 };
  12
  13 struct baglist {
  14         struct bag *bag,
  15         struct baglist *next;
  16 };
  17
  18 char *bagnames[MAXBAGS];
  19
  20 int main()
  21 {
  22         char buffer[MAXLINE];
  23
  24         while (fgets(buffer, MAXLINE, stdin)) {
  25                 char *p;
  26                 p = strstr(buffer, " bag");
  27                 *p = 0;
  28                 printf("bag: %s\n", buffer);
  29                 p = strstr(p+1, " contain ") + strlen(" contain");
  30
  31                 while (p) {
  32                         if (*p == ' ')
  33                                 p++;
  34                         if (*p == 'n') {
  35                                 printf("\tno other\n");
  36                                 break;
  37                         }
  38                         int num = atoi(p);
  39                         char *bag = p = strchr(p, ' ') + 1;
  40                         p = strstr(p, " bag");
  41                         *p = 0;
  42                         p += strlen(" bag");
  43                         printf("\t%d, %s.\n", num, bag);
  44                         p = strchr(p, ' ');
  45                 }
  46         }
  47 }