Question

我正在尝试在我的代码中执行以下操作，这是C语言中textsort的实现。

-data []包含指向从文件中读取的句子的指针。

复制“数据”数组的第j个内容，并将其存储在行缓冲区char *中。（此数组是一个指针数组，实例化为const char ** data，并以以下方式进行malloc-ed：data = malloc（sizeof（char *）* numlines））
然后我尝试使用空格作为分隔符将句子分成单词。

-最后，我正在尝试将strtok返回的指针存储在初始化为char * tokenarray和malloc-ed为tokenarray = malloc（sizeof（char *）* numlines）的指针数组中。这是代码：

`

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#define MAXCHAR 150 
#define COPYMAX 150 

char inpstr[MAXCHAR];  //char array for the input string storage 
char copyd[MAXCHAR];   // copy needed for some fxn 
char *temp_bffr; 
size_t buffsize; 
int status;
char filename; 
int numlines; 
numlines = 5; 
int i; 
char *storedline;
FILE *fileo; //fopen pointer
const char **data; 



int separate_words(char ** txtarray){
    printf("separating\n"); 
    char *token; //for strtok
    char *tokenarray; 
    int j; 
    char *linebuffer = (char *) malloc(MAXCHAR); //malloc since we want to modify this copy? 
    tokenarray = malloc(sizeof(char *)*numlines); 

    for(j = 0; j<= numlines; j++){
        //printf("Element[%d] = %d\n", j, data[j]); 
        strcpy(linebuffer, data[j]); 
        token = strtok(linebuffer, " "); 
        tokenarray[j] = token; 
    }
    return 0; 
}


int my_compare(const void *elem1, const void *elem2){

    printf("comparing is hard"); 
    //qsort????


    return 0; 
}


int main(){

    fileo = fopen("short_alma.txt","r"); 
    data = (char **)malloc(numlines * sizeof(char *));
    //check stats from file 
    struct stat buffer; 
    if(fstat(status, &buffer) != 0){
    printf("error: fstat()\n");
        exit(1); 
    }
    // temporary buffer 
    temp_bffr = malloc(sizeof(char)* (MAXCHAR +1)); 
    i = 0; 
    //usefgets to start reading: 
    while(fgets(temp_bffr, MAXCHAR, fileo)){
        //printf("temp_bffr is : \n"); 
        //puts(temp_bffr); 
        //check sizeif line < MAX, save size and do realloc()
        if(strlen(temp_bffr) < MAXCHAR){
            buffsize = strlen(temp_bffr);  
            //malloc memory using buffer size before the string copy??? is this it??? 
            data[i] = malloc(sizeof(char)*numlines);    
            strcpy(data[i], temp_bffr);
            i++;            
        }

        else{
            printf("line has too many chars!"); 
        }
    }
        separate_words(data); //separate the strings in our array


    //return data; 
    return 0; 

}

`

使用strtok后将指针添加到已建立的指针数组

0 个答案: