从文件中读取数据，直到在C / C行结束++ [英] read data from file till end of line in C/C++

问题描述

这是常见的读取，直到文件结束，但我很感兴趣，我怎么能读取文本文件数据（一串数字），直到的行的的结束？我得到了任务读几大系列，从一个文件编号，这是定位在新的线路。这里被输入的一个示例：

It is common to read until end of file, but I am interested in how could I read data (a series of numbers) from a text file until the end of a line? I got the task to read several series of numbers from a file, which are positioned in new lines. Here is an example of input:

1 2 53 7 27 8
67 5 2
1 56 9 100 2 3 13 101 78

第一系列：1 2 53 7 27 8

First series: 1 2 53 7 27 8

第二个：67 5 2

Second one: 67 5 2

第三个：1 56 9 100 2 3 13 101 78

Third one: 1 56 9 100 2 3 13 101 78

我必须从文件分别读取它们，但每一个直到行末。我有这个code：

I have to read them separately from file, but each one till the end of line. I have this code:

    #include <stdio.h>
    FILE *fp;
    const char EOL = '\\0';
    void main()
    {
        fp = fopen("26.txt", "r");
        char buffer[128];
        int a[100];
        int i = 0;
        freopen("26.txt","r",stdin);
        while(scanf("%d",&a[i])==1 && buffer[i] != EOL)
             i++;
        int n = i;
        fclose(stdin);
     }  

它读取，直到文件的末尾，所以它不这样做完全是我期望的那样。你有什么建议？

It reads until the end of the file, so it doesn't do quite what I would expect. What do you suggest?

推荐答案

使用与fgets （）读一个完整的线，然后用解析线（可能与strtol（））。

Use fgets() to read a full line, then parse the line (possibly with strtol()).

#include <stdio.h>
#include <stdlib.h>

int main(void) {
  char buffer[10000];
  char *pbuff;
  int value;

  while (1) {
    if (!fgets(buffer, sizeof buffer, stdin)) break;
    printf("Line contains");
    pbuff = buffer;
    while (1) {
      if (*pbuff == '\n') break;
      value = strtol(pbuff, &pbuff, 10);
      printf(" %d", value);
    }
    printf("\n");
  }
  return 0;
}

您可以的见的 code。在ideone 运行。

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