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連結清單實作學生資訊管理系統,增删查改

很久沒有寫C語言了,今天突然回顧一下,就寫了一個簡答的單連結清單實作學生資訊管理的增删查改,對與初學者來說可以參考!

#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
using namespace std;
//表節點結構體
typedef struct LinkNode
{
    char stu_no[10];//學号
    char stu_name[10];//名字
    struct LinkNode *next;
}LinkNode;
//初始化連結清單
LinkNode* Initial_LinkList(LinkNode *&L)
{
      LinkNode *node = (LinkNode*)malloc(sizeof(LinkNode));
      node->next = NULL;
}
//向連結清單中插入新節點
void InsertNode(LinkNode *&L,char *stu_no,char *stu_name)
{
    if(L!=NULL)
    {
      LinkNode *node = (LinkNode*)malloc(sizeof(LinkNode));
      strcpy(node->stu_no,stu_no);
      strcpy(node->stu_name,stu_name);
      node->next = NULL;

      LinkNode *p;
      p=L;
      node->next=p->next;
      p->next=node;

    }
}
//列印連結清單節點資訊
void printNode(LinkNode *L)
{
    LinkNode *p=L->next;
    while(p!=NULL)
    {
    printf("stu_no:%s stu_name:%s \n",p->stu_no,p->stu_name);
    p=p->next;
    }

}
//删除連結清單節點
void deleteNode(LinkNode *&L,char *num)
{
    LinkNode *p,*s;
    p=L;
    while(p->next!=NULL)
    {
    if(strcmp(p->next->stu_no,num)==0)
    {
        s=p->next;
        p->next=p->next->next;
        free(s);
    }
    p=p->next;
    }
}
//修改連結清單節點資訊
void modify_Node(LinkNode *L,char *stu_no,char stu_name[])
{
    LinkNode *p;
    p=L->next;
    while(p!=NULL)
    {
        if(strcmp(stu_no,p->stu_no)==0)
        {
            strcpy(p->stu_name,stu_name);
        }
        p=p->next;
    }
}
int main()
{
    int i=0;
    LinkNode *L;
    L=Initial_LinkList(L);
    char stu_no[10],stu_name[10];

    while(i<4)
    {
        cout<<"please enter stu_no:"<<endl;
        scanf("%s",&stu_no);
        cout<<"please enter stu_name:"<<endl;
        scanf("%s",&stu_name);
        InsertNode(L,stu_no,stu_name);
        ++i;
    }
    printNode(L);
    printf("enter delete num:");
    scanf("%s",&stu_no);
    deleteNode(L,stu_no);
    printNode(L);
    printf("輸入要修改的學号:");
    scanf("%s\n",&stu_no);
    printf("輸入新姓名:");
    scanf("%s\n",&stu_name);
    modify_Node(L,stu_no,stu_name);
    printNode(L);
    return 0;
}