当我调用 print_linklist 函数时，出现分段错误。下面是函数定义：

//will display the node in a nice string
char * term_to_string(term_t * term){
    int exp = term->exponent;
    int coef = term->coefficient;
    return ("%dx^%d", coef, exp);
}

**//will print the list using the nodde_to_string method
void print_linklist(node_t * curr){
    printf("entering print to list!!!");
    node_t * current = curr;
    while(current != NULL){
        printf("%s +", term_to_string(curr->term));
        current = current->next_node;
    }
}**

这是调用它的主要方法：

/* This is your main file */
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include"common.h"
#include"buildlinklist.h"
#include"printandcombine.h"
int main() {
    node_t * node_ptr = NULL;
    node_t * new_node_ptr=NULL;
    printf("NAME: SAMPLE OUTPUTn");
    
    /* Build linklist */
    read_objects(&node_ptr);
    
    /* Print the link list */
    printf("Original: n");
    print_linklist(node_ptr);
    
    /* Combine like terms in the link list and craeate a new link list */
    new_node_ptr=combine_like_terms(node_ptr);
    printf("nCombined: : ");
    /* Print new combine linklist */
    print_linklist(new_node_ptr);
    printf("nNAME: SAMPLE OUTPUTn");
    free(node_ptr);
    free(new_node_ptr);
    return 0;
}

调用该函数后，我得到“zsh：segmentation fault ./project1”。我什至没有得到“输入打印列表！！！” 从 print_linklist 方法打印。

回答

return ("%dx^%d", coef, exp);

void print_term(const term_t *term, const char *after){
    printf("%dx^%d%s", term->coefficient, term->exponent, after);
}

void print_linklist(node_t *curr){
    puts("entering print to list!!!");
    node_t *current = curr;
    while (current != NULL){
        print_term(curr->term, " +");
        current = current->next_node;
    }
}