无法计算文本文件中的单词数量

时间:2017-11-11 06:47:11

标签: c text-files std stdio

C语言,库stdio.h,stdlib.h和string.h

问题

文本文件(text.txt)内容:

The price of sugar will be increased by RM 0.20 per kg soon. Please consume less sugar for a healthy lifestyle.

(注意: 是文本文件末尾的新行。)

这个问题要求我计算text.txt中的字符,字母,元音,辅音,空格和单词的数量。

到目前为止,这是我的代码:

    FILE *t;
    t = fopen("text.txt", "r");
    int chrc = 0, ltrs = 0, vwls = 0, cnsnts = 0, blnks = 0, wrds = 0;
    char a[1], b[50];

    while (fscanf(t, "%c", &a[0]) != EOF) {
        chrc++;
        if (a[0] >= 65 && a[0] <= 90 || a[0] >= 97 && a[0] <= 122)
            ltrs++;
        if (a[0] == 'A' || a[0] == 'a' || a[0] == 'E' || a[0] == 'e' || a[0] == 'I' || a[0] == 'i' || a[0] == 'O' || a[0] == 'o' || a[0] == 'U' || a[0] == 'u')
            vwls++;
        cnsnts = ltrs - vwls;
        if (a[0] == 32)
            blnks++;
    }

    while (fscanf(t, "%s", &b) != EOF)
        wrds++;

    printf("Total number of characters: %d\n", chrc);
    printf("Number of letters: %d\n", ltrs);
    printf("Number of vowels: %d\n", vwls);
    printf("Number of consonants: %d\n", cnsnts);
    printf("Number of blanks (spaces): %d\n", blnks);
    printf("Approx no. of words: %d\n\n", wrds);
    fclose(t);

问题

除了单词数之外,所有当前输出都是预期的。而不是预期的21,我得到:

Approx no. of words: 0

然后我编辑了我的代码就变成了这个:

    FILE *t;
    t = fopen("text.txt", "r");
    int chrc = 0, ltrs = 0, vwls = 0, cnsnts = 0, blnks = 0, wrds = 0;
    char a[1], b[50];

    while (fscanf(t, "%s", &b) != EOF)
        wrds++;

    printf("Approx no. of words: %d\n\n", wrds);
    fclose(t);

我得到了预期的输出:

Approx no. of words: 21

我只是删除了它上面的动作,输出也发生了变化。我真的不明白为什么会这样。是不是因为我曾经对文本文件进行过一次fscanf?

如何制作21这是第一个代码程序的单词数量的输出?我在这里做错了什么?

1 个答案:

答案 0 :(得分:0)

您错过了rewind可能

rewind(t);
while (fscanf(t, "%s", &b) != EOF)
    wrds++;