Question

我试图编写一个程序，读取用户输入的每个单词，然后将该单词粘贴到链表中。这是我到目前为止所尝试的但是遇到了seg错误但不太确定我在mallocing /指针错误的地方。（尚未实现printList）。

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

#define MAX_LEN 20

typedef struct node{
    char *word;
    struct node *next;
}node_t;

node_t *read(node_t *node);
void printList(node_t *node);
node_t *insertNode(char *word, node_t *node, int size);

int main(int argc, char *argv[]) {
    node_t *start = NULL;
    printf("Enter a sentence:\n");
    read(start);



    return 0;
}

void *read(node_t *node){
    int i, size = MAX_LEN;
    char c, *word;
    if(!(word=malloc(size))){
        printf("Out of memory!\n");
        exit(EXIT_FAILURE);
    }
    while((c=getchar())!='\n'){
        for(i=0;c!=' ';i++){
            word[i]=c;
            if(i>size){
                size=size*2;
                if(!realloc(word, size)){
                    printf("Out of memory\n");
                    exit(EXIT_FAILURE);
                }
            }
        }
        node = insertNode(word,node,size);  
    }
    return node;
}

node_t *insertNode(char *word, node_t *node, int size){
    node_t *new_node, *current;
    new_node = (node_t*)malloc(sizeof(node_t));
    new_node->next = NULL;
    if(!(new_node->word = malloc(size))){
        printf("Out of memory\n");
        exit(EXIT_FAILURE);
    }
    strcpy(new_node->word,word);

    if (node == NULL){
        node = new_node;
        current = new_node;
    }

    else{
        current->next = new_node;
        current = new_node;
    }
    return node;
}

将单词读入链表

0 个答案: