读取一行在C时间 [英] Reading one line at a time in C

问题描述

哪种方法可用于从在C 2

Which method can be used to read one line at a time from a file in C?

我使用的与fgets 的功能，但它不工作。
它的阅读记号只有分开的空间。

I am using the fgets function, but it's not working. It's reading the space separated token only.

该怎么办？

推荐答案

这应该工作，当你不能使用与fgets（）出于某种原因。

This should work, when you can't use fgets() for some reason.

int readline(FILE *f, char *buffer, size_t len)
{
   char c; 
   int i;

   memset(buffer, 0, len);

   for (i = 0; i < len; i++)
   {   
      int c = fgetc(f); 

      if (!feof(f)) 
      {   
         if (c == '\r')
            buffer[i] = 0;
         else if (c == '\n')
         {   
            buffer[i] = 0;

            return i+1;
         }   
         else
            buffer[i] = c; 
      }   
      else
      {   
         //fprintf(stderr, "read_line(): recv returned %d\n", c);
         return -1; 
      }   
   }   

   return -1; 
}

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