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C++ 指针变量赋值_C++_Pointers_Linked List - Fatal编程技术网

C++ 指针变量赋值

C++ 指针变量赋值,c++,pointers,linked-list,C++,Pointers,Linked List,我已经创建了一个结构: struct time { int hours; int minutes; int seconds; double total_time; double price; time* next; time* back; }; 我创建了两个指向结构的指针: time* traverse, head; 我想将头部的位置指向与头部相同的位置: traverse = new time; head = travers

我已经创建了一个结构:

struct time
{
    int hours;
    int minutes;
    int seconds;
    double total_time;
    double price;

    time* next;
    time* back;
};
我创建了两个指向结构的指针:

time* traverse, head;
我想将头部的位置指向与头部相同的位置:

traverse = new time;
    head = traverse; // Error here

为什么我在作业中遇到错误?

因为您没有将head声明为指针:

time* traverse, *head;   //both are pointers
不一样

time* traverse, head;    //one is a pointer, one is an object

指针的声明是错误的

time* traverse, head;
它只声明一个指针和一个对象

您应将其声明为:

time* traverse;
time* head;
写作时

time* traverse, head;
星号只影响第一个变量。将您的声明更改为

time *traverse, *head;
错误应该消失了