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我的代碼返回一個分段錯誤，我不知道爲什麼。c linux中的分段錯誤（核心轉儲）
它打印輸出的一部分並給出分段錯誤。我找不到錯誤。
它應該用數字&句子&段落&具有最高頻率的頂部詞按順序排列。
這裏是我的代碼：
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "preprocessing_header.h"
#include "calculations_header.h"
int main(int argc, char* argv[])
{
if (argc != 3)
{
printf("Error: number of arguments must be 3\n");
exit(-1);
}
char* file_name;
file_name = argv[1];
int N = atoi(argv[2]);
char final_string[number_of_char_aprox];
char *string;
string = Preprocessing(file_name);
strcpy(final_string, string);
printf("%s\n", final_string);
calculations(final_string, N);
return 0;
}
/* The main function for sorting the file in the appropriate form */
char* Preprocessing(char file_name[])
{
char final_string[number_of_char_aprox];
char *string;
FILE *in = fopen(file_name,"r");
if (in == NULL) {
printf("Not found");
exit(-1);
}
Head lines_list = (Head)malloc(sizeof(struct line)); // list of the lines from the file
lines_list->next = NULL;
readFile(lines_list, in); // read the file and put each line in a node in the list
fclose(in);
remove_spaces(lines_list); // make only a single space after each word in the lines
to_lower(lines_list); // convert all charachter in each line to small letter
punctuation_marks(lines_list); // make a one single space after punctuation marks
lines_list = reverse_list(lines_list); // reverse the list
string = concat_string(lines_list);// put all line in one string
strcpy(final_string, string);
free_list(lines_list);
string = Atter_punctuation_marks(final_string); // make letters atter punctuation
strcpy(final_string, string);
string = add_point(final_string);
strcpy(final_string, string);
//string = remove_line_feed(final_string);// remove line feed in the same paragraph
//strcpy(final_string, string);
string = final(final_string);// the final form of the string
return string;
}
/* Make the needed calculations */
void calculations(char final_string[],int N)
{
int i;
int number_of_words;
int number_of_sentences;
int number_of_paragraphs;
Head_word lw[26];// array of linked list of the words
for(i = 0; i < 26; i++)
{
lw[i] = (Head_word)malloc(sizeof(struct word));
lw[i]->next = NULL;
}
number_of_words = count_words(final_string, lw);
number_of_sentences = count_sentences(final_string);
number_of_paragraphs = count_paragraphs(final_string);
printf("\n******************************************************\n\n");
printf("\n******************************************************\n\n");
printf("number_of_words = %d\n",number_of_words);
printf("\nnumber_of_sentences = %d\n",number_of_sentences);
printf("\nnumber_of_paragraphs = %d\n",number_of_paragraphs);
printf("\n******************************************************\n\n");
printf("Top %d words with highest frequencies in order : \n\n",N);
Head_word most_repeated[N];
most_repeated_words(lw,most_repeated, N);
free_lists_words(lw);
sort(most_repeated,N); //sort the most frequently used words
print_most_repeated_words(most_repeated, N);
}
這裏是preprocessing_header.h
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "preprocessing_header.h"
/*read the file and put each line in a node in a linked list*/
void readFile(Head l, FILE *in)
{
position p;
while(!feof(in))
{
p = (position)malloc(sizeof(struct line));
fgets(p->string,10000,in);
p->next = l->next;
l->next = p;
}
}
/* make only a single space after each word in the lines*/
void remove_spaces(Head l)
{
int i = 0;
int j = 0;
int k;
position p = l->next;
char temp[1000];
while(p != NULL)
{
i = 0;
j = 0;
for(k = 0;k<1000;k++)
{
temp[k] = '\0';
}
while(p->string[i] != '\0')
{
if(p->string[0] == ' ')
{
while(p->string[i] == ' ')
i++;
}
while(p->string[i] != ' ' && p->string[i] != '\0')
{
temp[j] = p->string[i];
i++;
j++;
}
while(p->string[i] == ' ')
{
i++;
}
temp[j++] = ' ';
}
temp[j+1] = '\0';
strcpy(p->string,temp);
p = p->next;
}
}
void to_lower(Head l)
{
position p = l->next;
int i = 0;
while(p != NULL)
{
i = 1;
while(p->string[i] != '\0')
{
if(p->string[i]>= 65 && p->string[i]<=90)
{
p->string[i]+= 32;
}
i++;
}
p = p->next;
}
}
/*make a one single space after punctuation marks and no space before it*/
void punctuation_marks(Head l)
{
position p = l->next;
int i,j,k;
char temp[1000];
while(p != NULL)
{
i = 0;
j = 0;
for(k = 0;k<1000;k++)
{
temp[k] = '\0';
}
while(p->string[i] != '\0')
{
if(p->string[i] == '.' || p->string[i] == ',' || p->string[i] == ';' ||p->string[i] == '?')
{
if(p->string[i-1] == ' ')
{
temp[--j] = p->string[i];
}
if(p->string[i+1] != ' ')
{
temp[j++] = p->string[i++];
temp[j++] = ' ';
}
}
temp[j++] = p->string[i++];
}
temp[j+1] = '\0';
strcpy(p->string,temp);
p = p->next;
}
}
/*reverse linked list*/
Head reverse_list(Head l)
{
Head l2 = (Head)malloc(sizeof(struct line));
l2->next = NULL;
position p = l->next;
while(p != NULL)
{
l->next = p->next;
p->next = l2->next;
l2->next = p;
p = l->next;
}
free(l);
return l2;
}
/* put all line in one string*/
char* concat_string(Head l)
{
char *temp = malloc(number_of_char_aprox*sizeof(char));
int k;
for(k = 0;k<number_of_char_aprox;k++)
{
temp[k] = '\0';
}
position p = l->next;
while(p != NULL)
{
strcat(temp,p->string);
p = p->next;
}
return temp;
}
/*remove line feed in the same paragraph*/
char* remove_line_feed(char final_string[])
{
int i;
char *temp = malloc(number_of_char_aprox*sizeof(char));
for(i = 0;i<number_of_char_aprox;i++)
{
temp[i] = '\0';
}
int j=0;
//printf("%s",final_string);
for(i = 0;i<strlen(final_string);i++)
{
if(final_string[i] == 13)
{
if(final_string[i-2]== '.')
{
temp[j++] = final_string[i++];
}
else
{
i = i+2;
}
}
temp[j++] = final_string[i];
}
return temp;
}
/*make letters atter punctuation marks capital letters*/
char* Atter_punctuation_marks(char string[])
{
char *temp = malloc(number_of_char_aprox*sizeof(char));
int k;
int i=0,j=0;
for(k = 0;k<number_of_char_aprox;k++)
{
temp[k] = '\0';
}
while(string[i] != '\0')
{
if(string[i] == '.' || string[i] == ';' ||string[i] == '?' || string[i] == '\n')
{
if(string[i+2] >= 97 && string[i+2]<=122)
{
temp[j++] = string[i++];
temp[j++] = string[i++];
temp[j++] = string[i++]-32;
}
}
if(string[i] == 'i' && string[i-1] == ' ' && string[i+1] == ' ')
{
string[i]-= 32;
}
temp[j++] = string[i++];
}
temp[j+1] = '\0';
return temp;
}
char* to_lower_case(char string[])
{
int i = 0;
while(string[i] != '\0')
{
if(string[i]>= 65 && string[i]<=90)
{
string[i]+= 32;
}
i++;
}
return string;
}
/*make only one empty line between paragraphs and return the stirng with the final form*/
char* final(char s[])
{
int i;
int j = 0;
char *temp = malloc(number_of_char_aprox*sizeof(char));
for(i = 0;i<number_of_char_aprox;i++)
{
temp[i] = '\0';
}
j = 0;
for(i = 0;i<strlen(s);i++)
{
if(s[i]== ' ' && s[i-1] == '\n')
{
i++;
}
if(s[i] == '\n')
{
while(s[i+3] == '\n')
{
i+=3;
}
temp[j++] = '\n';
}
temp[j++] = s[i];
}
return temp;
}
void free_list(Head l)
{
position temp;
while(l->next != NULL)
{
temp = l->next;
l->next = temp->next;
free(temp);
}
free(l);
}
char* add_point(char s[])
{
int i,j=0;
char *temp = (char*)malloc(10000*sizeof(char));
for(i=0;i<strlen(s);i++)
{
if(s[i]==13 && !strchr(".,?;",s[i-1]) && !strchr(".,?;",s[i-2]))
{
temp[j++] = '.';
i++;
}
temp[j++] = s[i];
}
return temp;
}
，這裏是我的calculations_header.h
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "calculations_header.h"
/*count the number of words in the string and put the word in an array of linked list
which index is the first letter in each word eg (a)re in the linked list of index 0.
The word will be put in the list if it is a new word only if it is repeated the counter
of the node containing the word will increase*/
int count_words(char string[],Head_word lw[])
{
int i,j,k=0, length=0, count=0;
char word[50];
position_word p;
for(j=0;j<50;j++)
{
word[j] = '\0';
}
length= strlen(string);
for (i=0; i<length; i++)
{
if((string[i] == ' ' && string[i+1] != ' ') || string[i] == 10 || string[i] == 13)
{
if(!is_exist(word,lw[word[0]-97]))
{
//printf("%s\n",word);
p = (position_word)malloc(sizeof(struct word));
strcpy(p->string,word);
p->counter = 1;
p->next = lw[word[0]-97]->next;
lw[word[0]-97]->next = p;
}
//printf("%d",word[1]);
//printf("%s\n",word);
if((word[1]>=97 && word[1]<=123) || (word[1]>=65 && word[1]<=91))
count++;
k = 0;
for(j=0;j<50;j++)
{
word[j] = '\0';
}
}
if((string[i]>=97 && string[i]<=123) || (string[i]>=65 && string[i]<=91))
{
if(string[i] >= 65 && string[i] <= 90)
{
word[k] = string[i]+32;
}
else
{
word[k] = string[i];
}
k++;
}
}
return count;
}
/*test if the word is exist in the list*/
int is_exist(char word[], Head_word l)
{
int flag = 0;
Head_word p;
p = l->next;
while(p!=NULL)
{
if(strcmp(word,p->string) == 0)
{
p->counter++;
flag = 1;
break;
}
p = p->next;
}
return flag;
}
/*decide which N word are the most frequently used*/
void most_repeated_words(Head_word lw[],Head_word most_repeated[],int n)
{
int i,j;
int least;
position_word p;
for(i = 0 ;i<n;i++)
{
most_repeated[i] = (Head_word)malloc(sizeof(struct word));
most_repeated[i]->next = NULL;
most_repeated[i]->counter = 0;
}
for(i = 0;i<26;i++)
{
p = lw[i]->next;
while(p!= NULL)
{
for(j = 0 ; j<n;j++)
{
if(p->counter > most_repeated[j]->counter)
{
least = get_least(most_repeated,n);
strcpy(most_repeated[least]->string,p->string);
most_repeated[least]->counter = p->counter;
break;
}
}
p = p->next;
}
}
}
/*get the least repeated word in the array*/
int get_least(Head_word l[],int n)
{
int i;
int least = 10000;
int index;
for(i = 0;i<n;i++)
{
if(l[i]->counter < least)
{
least = l[i]->counter;
index = i;
}
}
return index;
}
/*count the number of sentences*/
int count_sentences(char s[])
{
int i;
int count = 0;
for(i=0;i<strlen(s);i++)
{
if(strchr(".?;,",s[i]))
{
count++;
}
}
return count;
}
/*count the number of paragraphs*/
int count_paragraphs(char s[])
{
int i;
int count = 0;
for(i=0;i<strlen(s);i++)
{
if(s[i] == '\n' && s[i+1]>=65 && s[i+1]<=90)
{
count++;
}
}
return count+1;
}
/*print the most repeated N words and how many time it has been used*/
void print_most_repeated_words(Head_word most_repeated[],int N)
{
int i;
for(i=0;i<N;i++)
{
printf("%s\t%d\n",most_repeated[i]->string,most_repeated[i]->counter);
}
}
/*sort the N most frequently used word in ascending order */
void sort(Head_word most_repeated[],int N)
{
int i,j;
Head_word temp = (Head_word)malloc(sizeof(struct word));
for (i = 0 ; i < (N - 1); i++)
{
for (j = 0 ; j < N - i - 1; j++)
{
if (most_repeated[j]->counter < most_repeated[j+1]->counter)
{
temp->counter = most_repeated[j]->counter;
strcpy(temp->string,most_repeated[j]->string);
most_repeated[j]->counter = most_repeated[j+1]->counter;
strcpy(most_repeated[j]->string,most_repeated[j+1]->string);
most_repeated[j+1]->counter = temp->counter;
strcpy(most_repeated[j+1]->string,temp->string);
}
}
}
}
void free_lists_words(Head_word l[])
{
int i;
position_word temp;
for(i = 0;i<26;i++)
{
while(l[i]->next != NULL)
{
temp = l[i]->next;
l[i]->next = temp->next;
free(temp);
}
free(l[i]);
}
}
這裏是我calculations_header.h：
#ifndef CALCULATIONS_HEADER_H_INCLUDED
#define CALCULATIONS_HEADER_H_INCLUDED
/*This structure to save each word to make calculations*/
typedef struct word *ptr_word;
struct word
{
char string[50];
int counter;
ptr_word next;
};
typedef ptr_word Head_word;
typedef ptr_word position_word;
/*calculation functions prototypes*/
char* Preprocessing(char []);
void calculations(char [],int);
int count_words(char [],Head_word[]);
int is_exist(char [], Head_word);
void print(Head_word[]);
void most_repeated_words(Head_word [],Head_word[],int);
int get_least(Head_word[],int);
int count_paragraphs(char []);
int count_sentences(char []);
void print_most_repeated_words(Head_word[],int);
void sort(Head_word [],int);
void free_lists_words(Head_word []);
#endif // CALCULATIONS_HEADER_H_INCLUDED
這裏是我preprocessing_header.h：
#ifndef PREPROCESSING_HEADER_H_INCLUDED
#define PREPROCESSING_HEADER_H_INCLUDED
#define number_of_char_aprox 10000
/*This structure for saving each line read from the file*/
typedef struct line *ptr;
struct line
{
char string[10000];
ptr next;
};
typedef ptr Head;
typedef ptr position;
/*preprocessing functions prototypes*/
void readFile(Head,FILE *);
void remove_spaces(Head);
void to_lower(Head);
void punctuation_marks(Head);
Head reverse_list(Head);
char* concat_string(Head);
void free_list(Head);
char* Atter_punctuation_marks(char []);
char* remove_line_feed(char []);
char* final(char []);
#endif // PREPROCESSING_HEADER_H_INCLUDED
它給我主上線60只是警告（字符串= add_point（final_string）; ）
我認爲函數計算它使錯誤。
您應該學會使用調試器，以便您自己調試。 – ooga
如果您不知道如何使用調試器，請嘗試縮小打印語句發生的位置。例如'fprintf（stderr，「內部計算（...）」）''。此外，如果你可以更好地縮進你的代碼，這將是有益的。 –
@ooga我用它它可以讓我在60行上交戰 – john