I have the weirdest thing happening, and I'm not quite sure why it's happening. Basically what I need to do is use fgetc to get the contents of a simple ASCII file byte by byte. The weird part is it worked, but then I added a few more characters and all of a sudden it added a newline that wasn't there and read past the end of the file or something. Literally all I did was

我有最奇怪的事情发生，我不确定为什么会发生。基本上，我需要做的是使用fgetc来获取一个简单的ASCII文件字节的内容。奇怪的是它起作用了，但是我又添加了一些字符，突然它添加了一个不在那里的换行符，并读取了文件的末尾或其他东西。我所做的就是

do {
    temp = (char*) checked_realloc (temp, n+1);
    e = fgetc(get_next_byte_argument);
    temp[n] = e;
    if (e != EOF)
      n++;
 }
while (e != EOF);

And then to check I just printed each character out

然后检查我是否打印了每个字符

temp_size = strlen(temp)-1;
for(debug_k = 0; debug_k < temp_size; debug_k++){
  printf("%c", temp[debug_k]);
}

And it outputs everything correctly except it added an extra newline that wasn't in the file. Before that, I had

它正确地输出所有内容，除了添加了一个不在文件中的新行。在此之前,我有

temp_size = strlen(temp);

But then it ended on some unknown byte (that printed gibberish). I tried strlen(temp)-2 just in case and it worked for that particular file, but then I added an extra "a" to the end and it broke again.

但后来它以某个未知字节(打印出的是胡言乱语)结束。我尝试了strlen(temp)-2，以防万一，它对那个特定的文件起作用，但是我在末尾添加了一个“a”，它又坏了。

I'm honestly stumped. I have no idea why it's doing this.

我真的难住了。我不知道为什么会这样。

EDIT: checked_realloc is just realloc but with a quick check to make sure I'm not out of memory. I realize this is not the most efficient way to do this, but I'm more worried about why I seem to be magically reading in extra bytes.

编辑:checked_realloc只是realloc，但需要快速检查以确保我没有内存不足。我意识到这并不是最有效的方法，但我更担心的是为什么我似乎在用额外的字节神奇地阅读。

2 个解决方案

do{
    temp = (char*) checked_realloc (temp, n+1);//I guess you are starting n with 0? 
    temp[n]=0;
    e = fgetc(get_next_byte_argument);
    temp[n] = e;
    if (e != EOF)
        n++;
} while (e != EOF);
temp[n]=0;
n=0;