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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. #define BUFFSIZE 3 /* >= 2 */
  6. char *mygetline(FILE *fp) {
  7.   static char inbuff[BUFFSIZE];
  8.   char *outbuff_malloc, *tmpbuff;
  9.   char *p, *r;
  10.   int fEOL;
  11.  
  12.   if ((outbuff_malloc = malloc(1)) == NULL) {
  13.     return NULL;
  14.   }
  15.   *outbuff_malloc = '\0';
  16.   fEOL = 0;
  17.   do {
  18.     r = fgets(inbuff, BUFFSIZE, fp);
  19.     if (r == NULL)
  20.       break;
  21.     for (p = inbuff; *p != '\0'; p++)
  22.       ;
  23.     if (*(p - 1) == '\n')
  24.       fEOL = 1;
  25.     if ((tmpbuff = realloc(outbuff_malloc, strlen(outbuff_malloc) + strlen(inbuff) + 1)) == NULL) {
  26.       free(outbuff_malloc);
  27.       return NULL;
  28.     }
  29.     strcat(tmpbuff, inbuff);
  30.     outbuff_malloc = tmpbuff;
  31.   } while (!fEOL);
  32.   if (strlen(outbuff_malloc) > 0) {
  33.     char c;
  34.     for (p = outbuff_malloc; *p != '\0'; p++)
  35.       ;
  36.     while ((c = *(--p)) == '\n' || c == '\r')
  37.       *p = '\0';
  38.     return outbuff_malloc;
  39.   }
  40.   free(outbuff_malloc);
  41.   return NULL;
  42. }
  43.  
  44. int main() {
  45.   char *p;
  46.   while ((p = mygetline(stdin)) != 0) {
  47.     printf("%s\n", p);
  48.     free(p);
  49.   }
  50.   return 0;
  51. }
  52. /* end */
  53.  
Success #stdin #stdout 0.01s 1808KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/ltRGf
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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