读取单词并使用文件I / O对其进行排序的基本C代码

Question

我试图创建一个程序来读取包含许多单词的文件，删除特殊字母，计算单词数，并计算它在输入文件中有多少个字符及其出现频率。

它还会根据单词长度对单词列表进行排序，单词列表及其长度和频率应在排序后写入另一个名为 Results.txt 的文件中。

当我运行它时，它变得疯狂，我无法找到错误。代码有什么问题？

#include <stdio.h>
#include <string.h>

int main ()
{
    int wordcounter=1, i, j, count;
    int freq[100] = {0};
    int length[100] = {0};
    char cc[2] = "\0"; /* gives {\0, \0} */
    char word[100][100];
    char temp[100];
    // open the file
    FILE *in = fopen("text.txt","r");
    // Return if could not open file
    if (in == NULL)
        return 1;

    while(!feof(in))
    {
        char c = fgetc(in);
        cc[0]=c;
        printf("%s", cc);
        if( c=='a'||c=='b'||c=='c'||c=='d'||c=='e'||c=='f'||c=='g'||c=='h'||
                c=='i'||c=='j'||c=='k'||c=='l'||c=='m'||c=='n'||c=='o'||c=='p'||
                c=='q'||c=='r'||c=='s'||c=='t'||c=='u'||c=='v'||c=='w'||c=='x'||
                c=='y'||c=='z'||c=='A'||c=='B'||c=='C'||c=='D'||c=='E'||c=='F'||
                c=='G'||c=='H'||c=='I'||c=='J'||c=='K'||c=='L'||c=='M'||c=='N'||
                c=='O'||c=='P'||c=='Q'||c=='R'||c=='S'||c=='T'||c=='U'||c=='V'||
                c=='W'||c=='X'||c=='Y'||c=='Z'||c=='1'||c=='2'||c=='3'||c=='4'||
                c=='5'||c=='6'||c=='7'||c=='8'||c=='9'||c=='0')
        {
            strcat(word[wordcounter], cc);
            strcpy(word[wordcounter], strlwr(word[wordcounter]));
        }

        else if( c==' ' )
        {
            freq[wordcounter] = -1;
            wordcounter++;
            freq[wordcounter] = -1;

        }
    }

    fclose(in);

    for (i = 0; i < wordcounter; ++i)
    {
        for (j = i + 1; j < wordcounter; ++j)
        {
            if (strlen(word[i]) < strlen(word[j]))
            {
                strcpy(temp, word[i]);
                strcpy(word[i], word[j]);
                strcpy(word[j], temp);
            }
        }
    }

    for(i=0; i<wordcounter; i++)
    {
        count = 1;
        for(j=i+1; j<wordcounter; j++)
        {
            /* If duplicate element is found */
            if(strcmp(word[i], word[j])==0)
            {
                count++;

                /* Make sure not to count frequency of same element again */
                freq[j] = 0;
            }
        }

        /* If frequency of current element is not counted */
        if(freq[i] != 0)
        {
            freq[i] = count;
        }
    }

    for(i=0; i<=wordcounter; i++ )
    {
        length[i]=strlen(word[i]);
    }

    for(i=0; i<=wordcounter; i++ )
    {
        printf("\n%s ",word[i]);
        printf("%d ",length[i]); //strlen(str)
        printf("%d",freq[i]);
    }

    FILE *out = fopen("Results.txt","w");
    // Return if could not open file
    if (out == NULL)
        return 1;

    fprintf(out, "Number of words is %d\n", wordcounter);
    fprintf(out, "Word \t Length \t Freq \n");
    for(i=0; i<=wordcounter; i++ )
    {
        fprintf(out, "%s \t %d \t %d \n", word[i], length[i], freq[i]);
    }

    fclose(out);
    return(0);
}