[C语言]使用结构体+单链表创建简单的学生通讯录

向右看齐 2022-09-01 09:11 201阅读 0赞

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1lMSVlZ_size_16_color_FFFFFF_t_70]  
(1)建立:以线性表的存储结构方式建立学生通讯录。

(2)查询:以学生的学号查找相关学生信息，如果查找成功，则输出查找到的学生信息。

(3) 修改:将指定学号对的学生成绩修改为给定的值

(4)插人:将指定的新学生信息插人到通讯录线性表中

(5)删除:从通讯录线性表中删除指定学号的学生信息。

(6)输出:输出通讯录线性表中的所有学生信息。

#include <stdio.h>
    #include<stdlib.h>
    #include <string.h>
    
    typedef struct Student
    {
        
    	int num;			//学号
    	char name[25];		//姓名
    	char sex[25];		//性别
    	char telephone[25];	//电话
    	char address[25];	//地址
    	float score;		//成绩
    }STU;
    
    typedef struct Telephone
    {
        
    	STU data;
    	struct TEL* next;
    }TEL, * TELList;
    
    void Menu();						//显示菜单
    int CreateList(TELList MyTEL);		//1.建立
    int InquiryList(TELList MyTEL);		//2.查询
    int ChangeList(TELList MyTEL);		//3.修改
    int InsertList(TELList MyTEL);		//4.插入
    int DeleteList(TELList MyTEL);		//5.删除
    void OutputList(TEL TEL);			//6.输出
    
    int main() {
        
    	int select = 0;
    	TELList MyTEL;
    	int flag = 1;
    
    	//初始化链表
    	MyTEL = (TELList)malloc(sizeof(TEL));
    	if (MyTEL == NULL)
    		printf("为通讯录申请空间失败");
    	MyTEL->next = NULL;
    
    	//显示菜单
    	while (flag) {
        
    		Menu();
    
    		scanf_s("%d", &select);
    		switch (select)
    		{
        
    		case 1:CreateList(MyTEL);
    			break;
    		case 2:InquiryList(MyTEL);
    			break;
    		case 3:ChangeList(MyTEL);
    			break;
    		case 4:InsertList(MyTEL);
    			break;
    		case 5:DeleteList(MyTEL);
    			break;
    		case 6:OutputList(*MyTEL);
    			break;
    		case 0:flag = 0;
    			break;
    		default:flag = 0;
    			break;
    		}
    	}
    	return 0;
    }
    
    void Menu() {
        
        printf("\n");
    	printf("\t  学生通讯录\n");
    	printf("\t**************\n");
    	printf("\t1.建立  2.查询\n");
    	printf("\t3.修改  4.插入\n");
    	printf("\t5.删除  6.输出\n");
    	printf("\t0.退出通讯录\n");
    	printf("\t**************\n");
    	printf("\n");
    	printf("请输入您的选择（数字）：");
    }
    
    int CreateList(TELList MyTEL) {
        
    	TELList nowTEL, newTEL;
    	nowTEL = MyTEL;
    
    	while (nowTEL->next) {
        
    		nowTEL = nowTEL->next;
    	}
    
    	newTEL = (TELList)malloc(sizeof(TEL));
    	printf("请输入该同学的联系方式：\n");
    	printf("学号:\n");
    	scanf_s("%d", &newTEL->data.num);
    	printf("姓名:\n");
    	scanf_s("%s", newTEL->data.name);
    	printf("性别:(男：M 女：F)\n");
    	scanf_s("%s", newTEL->data.sex);
    	printf("电话:\n");
    	scanf_s("%s", newTEL->data.telephone);
    	printf("地址:\n");
    	scanf_s("%s", newTEL->data.address);
    	newTEL->data.score = -1;
    	newTEL->next = NULL;
    	nowTEL->next = newTEL;
    
    	return 1;
    }
    
    int InquiryList(TELList MyTEL) {
        
    	TELList s;
    	int stunum;
    	s = MyTEL->next;//指向第一位同学
    
    	printf("请输入需要查询的同学学号：\n");
    	scanf_s("%d", &stunum);
    	while (s != NULL && (s->data.num != stunum)) {
        
    		s = s->next;
    	}
    	if (s == NULL) {
        
    		printf("没有在通讯录找到该同学。\n");
    		return 0;
    	}
    	else {
        
    		printf("该同学的信息如下:\n");
    		printf("学号|姓名|性别|电话|地址|成绩\n");
    		printf("%d|%s|%s|%s|%s|%f\n", s->data.num, s->data.name, s->data.sex, s->data.telephone, s->data.address, s->data.score);
    	}
    
    	return 1;
    }
    
    int ChangeList(TELList MyTEL) {
        
    	TELList s;
    	int stunum;
    	s = MyTEL->next;//指向第一位同学
    
    	printf("请输入需要修改成绩的同学学号：\n");
    	scanf_s("%d", &stunum);
    	while (s != NULL && (s->data.num != stunum)) {
        
    		s = s->next;
    	}
    	if (s == NULL) {
        
    		printf("没有在通讯录找到该同学。\n");
    		return 0;
    	}
    	else {
        
    		printf("目前该同学的成绩为%f\n", s->data.score);
    		printf("请输入新成绩：\n");
    		scanf_s("%f", &s->data.score);
    	}
    
    	return 1;
    }
    
    int InsertList(TELList MyTEL) {
        
    	TELList s, r, newTEL;
    	int stunum;
    
    	s = MyTEL->next;
    	r = MyTEL;
    	printf("输入要在谁的学号之前添加信息：\n");
    	scanf_s("%d", &stunum);
    	while (s != NULL && (s->data.num != stunum)) {
        
    		r = s;
    		s = s->next;
    	}
    	if (s == NULL) {
        
    		printf("没有在通讯录找到该同学。\n");
    		return 0;
    	}
    	else {
        
    		newTEL = (TELList)malloc(sizeof(TEL));
    		printf("请输入该同学的联系方式：\n");
    		printf("学号:\n");
    		scanf_s("%d", &newTEL->data.num);
    		printf("姓名:\n");
    		scanf_s("%s", newTEL->data.name);
    		printf("性别:(男：M 女：F)\n");
    		scanf_s("%s", newTEL->data.sex);
    		printf("电话:\n");
    		scanf_s("%s", newTEL->data.telephone);
    		printf("地址:\n");
    		scanf_s("%s", newTEL->data.address);
    		newTEL->data.score = -1;
    		newTEL->next = s;
    		r->next = newTEL;
    	}
    
    	return 1;
    }
    
    int DeleteList(TELList MyTEL) {
        
    	TELList s, r;
    	int stunum;
    	s = MyTEL->next;
    	r = MyTEL;
    
    	printf("请输入你想删除的同学学号");
    	scanf_s("%d", &stunum);
    	while (s != NULL && s->data.num != stunum) {
        
    		r = s;
    		s = s->next;
    	}
    	if (s == NULL)
    		printf("没有在通讯录找到该同学。\n");
    	else {
        
    		r->next = s->next;
    		free(s);
    	}
    
    	return 1;
    }
    
    void OutputList(TEL TEL) {
        
    	TELList s = TEL.next;
    
    	printf("当前通讯录：\n");
    	printf("学号|姓名|性别|电话|地址|成绩\n");
    	while (s != NULL) {
        
    		printf("%d|%s|%s|%s|%s|%f\n", s->data.num, s->data.name, s->data.sex, s->data.telephone, s->data.address, s->data.score);
    		s = s->next;
    	}
    }

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