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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. #define N 20
  6.  
  7. int my_isspace(char c) {
  8.   return (c == ' ' || c == ',' || c == '.' || c == '\n');
  9. }
  10.  
  11. int read_word(FILE *fp,char buf[N]){
  12.   int i=0;
  13.   for(i=0;i<N;i++){
  14.     buf[i] = '\0';
  15.   }
  16.  
  17.   char c;
  18.   while (c = fgetc(fp), c != EOF && my_isspace(c))
  19.     ;
  20.   if (c == EOF)
  21.     return 0;
  22.   buf[0] = c;
  23.   i = 1;
  24.   while(((c = fgetc(fp)) != EOF) && i < N - 1) {
  25.     buf[i] = c;
  26.     if(my_isspace(c)){
  27.       buf[i] = '\0';
  28.       break;
  29.     }
  30.     i++;
  31.   }
  32.   if (c == EOF) {
  33.     buf[i] = '\0';
  34.   }
  35.   if (i == N - 1) {
  36.     ungetc(c, fp);
  37.     buf[N - 1] = '\0';
  38.   }
  39.   return i;
  40. }
  41.  
  42. struct word {
  43.   char name[N];
  44.   struct word *next;
  45. };
  46.  
  47. void addword(struct word **root, char buf[N]) {
  48.   struct word *p;
  49.   if ((p = malloc(sizeof(struct word))) == 0) {
  50.     printf("memory full, aborted.\n");
  51.     exit(1);
  52.   }
  53.   strcpy(p->name, buf);
  54.   p->next = *root;
  55.   *root = p;
  56. }
  57.  
  58. void dump(struct word *p) {
  59.   if (p == 0)
  60.     return;
  61.   printf("%s\n", p->name);
  62.   dump(p->next);
  63. }
  64.  
  65. int main() {
  66.   char buf[N];
  67.   FILE *fp;
  68.  
  69.   fp = fopen("anne_short.txt","r");
  70.   if(fp == NULL){
  71.     printf("File read error!\n");
  72.     exit(1);
  73.   }
  74.  
  75.   int n;
  76.   struct word *root;
  77.   root = 0;
  78.  
  79.   for (;;) {
  80.     n = read_word(fp, buf);
  81.     if (n == 0)
  82.       break;
  83.     addword(&root, buf);
  84.   }
  85.   dump(root);
  86.   fclose(fp);
  87.   return 0;
  88. }
  89. /* end */
  90.  
Runtime error #stdin #stdout 0s 10320KB
comments (?)
stdin
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Standard input is empty
stdout
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File read error!
https://ideone.com/SQtrDa
language:
C99 (gcc 8.3)
created:
6 years ago
visibility:
public

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