如何在C中的.txt文件中创建每个单词的结构? [英] How to create struct of every word in .txt file in C?

问题描述

如果给出的简短的.txt文件包含以下内容，您将如何为文件中特定行中的每个单词创建一个结构，并确定它前面是否带有*

if given a short .txt file that contained the following content, how would you go about creating a struct for every word in a specific line in the file and determining if it had an * before it

样本文件:

a *b c 
*d e f

我创建了以下结构:

typedef struct Unit
{
    bool hasStar;
    char variable[1];
} unit;

因此，我想为例如a，* b和c创建一个结构.我不确定如何执行此操作，因此，如何最好地解决此问题的任何帮助都将令人惊奇

So I would want to create a struct for a, *b, and c for example. I'm not sure how to do this, so any help on how best to approach this would be amazing

推荐答案

首先，您必须至少将 char变量[1] 更改为 char varibale [3] 例如，用于存储字符串"* a".

Firstly, you have to change char variable[1] to char varibale[3] at least for storing the string "*a" for example.

您可以使用 fgets 从文件中逐行获取，然后使用 strtok 从行中将空格分隔.

You can get line by line from the file using fgets then using strtok to separate the line by space character.

FILE *fp = fopen("intput.txt", "r");
if(!fp)
  // handle error.
char line[256];
while(fgets(line, sizeof(line), fp) {
    // using strtok to split each line
}

要使用 strtok 分割行并在单词的开头验证星形符号 * :

For spliting the line using strtok and verify the star symbol * at the begin of word:

char * token = strtok(line, " ");
while (token != NULL) {
    strcpy(units[i].variable, token);
    if (token[0] == '*')
       units[i].hasStar = true;
    else
        units[i].hasStar = false;
    strtok(NULL, " ");
    i++;
}

在 fgets 的 while 循环之前，您必须声明 units 的大小并首先初始化 i ，例如下面的代码，我将数组 units 的大小初始化为等于100:

Before while loop of fgets, you have to declare the size of units and initialize i first, for example the code below, i initialize the size of array units that is eaqual to 100:

unit units[100];
int i = 0;

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