无法读取使用的fscanf线（） [英] Trouble reading a line using fscanf()

问题描述

我想用下面的code读取行：

I'm trying to read a line using the following code:

while(fscanf(f, "%[^\n\r]s", cLine) != EOF )
{
    /* do something with cLine */
}

但不知何故，我只得到了第一行每次。这是读取一行一个糟糕的方​​式？我应该怎么修复，使其按预期工作？

But somehow I get only the first line every time. Is this a bad way to read a line? What should I fix to make it work as expected?

推荐答案

这几乎的总是的一个坏主意，使用的fscanf（）功能因为它可以让你的文件指针失败不明地点。

It's almost always a bad idea to use the fscanf() function as it can leave your file pointer in an unknown location on failure.

我preFER使用与fgets（）来获取每一行，然后的sscanf（）的。然后，您可以继续研究该行读取，你认为合适。是这样的：

I prefer to use fgets() to get each line in and then sscanf() that. You can then continue to examine the line read in as you see fit. Something like:

#define LINESZ 1024
char buff[LINESZ];
FILE *fin = fopen ("infile.txt", "r");
if (fin != NULL) {
    while (fgets (buff, LINESZ, fin)) {
        /* Process buff here. */
    }
    fclose (fin);
}

与fgets（）似乎是你想要做什么，读字符串直到遇到一个换行符。

fgets() appears to be what you're trying to do, reading in a string until you encounter a newline character.

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