（C 编程）我的链表上的总线错误答案

【问题标题】：(C programming) bus error on my linked list（C 编程）我的链表上的总线错误
【发布时间】：2022-11-13 17:43:38
【问题描述】：

我正在学习使用链表，我觉得我已经理解了这个概念，但是在编码时为什么我总是会出错（总线错误）....这段代码可以运行，但只有在“扫描名称”之后才会出现错误出现。

typedef struct Student{
    char name[20];
    char idNum[10];
    int  saving;

    struct Student *next;
}Student;

Student *head = NULL;

void insert_student(){
    char *name,*idNum;
    int saving;

    Student *current;
    Student *new_student;
    new_student = (Student*)malloc(sizeof(Student));

    // apakah ada memoory kosong?
    if(new_student==NULL){
        printf("==== YOUR MEMMORY IS FULL! ====\n");
        exit(0);
    }

    printf("Enter your name     : ");scanf("%[^\n]s",name);
    printf("Enter your Id       : ");scanf("%[^\n]s",idNum);
    printf("How many your money : Rp");scanf("%d",&saving);

    strcpy(new_student->name,name);
    strcpy(new_student->idNum,idNum);
    new_student->saving = saving;

    new_student->next = NULL;

    if(head==NULL){
        head = new_student;
    }
    else{
        current = head;
        while (current->next != NULL)
        {
            current = current->next;
        }
        current->next = new_student;
    }
}
void print_students(){
    Student *current;

    if(head==NULL){
        printf("==== THERE IS NO STUDENT YET!\n");
        exit(0);
    }
    current = head;
    while (current!= NULL)
    {
        printf("Name   : %s",current->name);
        printf("id     : %s",current->idNum);
        printf("Saving : Rp%d",current->saving);

        current = current->next;
    }
    
}

int main(){
    insert_student();
    print_students();
return 0;
}

我希望为动态链表学生创建节点，然后显示它们

【问题讨论】：

标签： c data-structures linked-list singly-linked-list

【解决方案1】：

  printf("Enter your name     : ");scanf("%[^
]s",name);
  printf("Enter your Id       : ");scanf("%[^
]s",idNum);

在将 named 和 idNum 的值传递给 scanf 之前，您必须提供有意义的值。相反，您只是将未初始化的垃圾值传递给scanf，这是行不通的。您必须将指针传递给scanf，指向您希望存储正在读取的字符串的位置。

【讨论】：