C语言单链表01
#include <stdio.h>#include <stdlib.h>
struct Date
{
int year;
int month;
int day;
};
struct Record
{
char name;
int age;
struct Date first;
struct Date second;
struct Record *next;
};
void getInput(struct Record *record)
{
char ch;
printf("请输入姓名:");
scanf("%s", record->name);
printf("请输入年龄:");
scanf("%d", &record->age);
printf("请问是否接种过疫苗(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' || ch != 'N');
if(ch != 'Y')
{
record->first.year = 0;
printf("请尽快接种疫苗!");
}
else
{
printf("请输入第一针疫苗接种的日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->first.year, &record->first.month, &record->first.day);
printf("请问是否接种第二针疫苗(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' || ch != 'N');
if(ch != 'Y')
{
record->second.year = 0;
printf("请尽快接种第二针疫苗!");
}
else
{
printf("请输入第二针疫苗接种日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->second.year, &record->second.month, &record->second.day);
}
}
}
void addRecord(struct Record **library)
{
struct Record *record, *temp;
record = (struct Record *)malloc(sizeof(struct Record));
if(record != NULL)
{
printf("内存分配失败!");
exit(1);
}
getInput(record);
if(*library != NULL)
{
temp = *library;
*library = record;
record->next = temp;
}
else
{
*library = record;
record->next = NULL;
}
}
void printRecord(struct Record *library)
{
struct Record *record;
while(record != NULL)
{
printf("姓名是:%s\n", record->name);
printf("年龄是:%d\n", record->age);
if(record->first.year == 0)
{
printf("未接种疫苗!\n");
}
else
{
printf("第一针接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day);
}
if(record->first.year != 0 && record->second.year == 0)
{
printf("未接种第二针疫苗!\n");
}else if(record->second.year != 0)
{
printf("第二针接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day);
}
record = record->next;
}
}
void releaseRecord(struct Record **library)
{
struct Record *temp;
while(*library != NULL)
{
temp = *library;
*library = temp->next;
free(temp);
}
}
int main(void)
{
struct Record *library;
char ch;
while(1)
{
printf("请问是否需要录入(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' || ch != 'N');
if(ch == 'Y')
{
addRecord(&library);
}
else
{
exit(1);
}
}
printf("请问是否需要录入(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' || ch != 'N');
if(ch == 'Y')
{
printRecord(library);
}
releaseRecord(&library);
return 0;
}
@FishC,帮我看下我的代码有什么bug吗?
为什么执行不起来! 你的代码有几个小问题:
1. 在结构体Record中,name应该是一个字符串类型char name,而不是单个字符char name。
2. 在getInput函数中,接收字符串输入时应该使用%s,而不是%s。
3. 在getInput函数中,在接收Y/N选项时,while循环的条件写错了。应该是ch != 'Y' && ch != 'N',而不是ch != 'Y' || ch != 'N',因为只要ch不等于Y或者不等于N,循环就会一直执行。
4. 在printRecord函数中,定义了record指针却没有为其赋初值,导致循环无法正确执行。你需要在循环开始之前,将record指针指向library。
5. 在main函数中,调用addRecord函数之前应该先初始化library指针为NULL,否则会出现未定义行为。
6. 在main函数中,检查是否需要录入的循环中,while循环的条件判断也写错了,应该是ch != 'Y' && ch != 'N',而不是ch != 'Y' || ch != 'N'。
正确的代码如下所示:
#include <stdio.h>
#include <stdlib.h>
struct Date
{
int year;
int month;
int day;
};
struct Record
{
char name;
int age;
struct Date first;
struct Date second;
struct Record *next;
};
void getInput(struct Record *record)
{
char ch;
printf("请输入姓名:");
scanf("%s", record->name);
printf("请输入年龄:");
scanf("%d", &record->age);
printf("请问是否接种过疫苗(Y/N):");
do
{
ch = getchar();
} while (ch != 'Y' && ch != 'N');
if (ch != 'Y')
{
record->first.year = 0;
printf("请尽快接种疫苗!\n");
}
else
{
printf("请输入第一针疫苗接种的日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->first.year, &record->first.month, &record->first.day);
printf("请问是否接种第二针疫苗(Y/N):");
do
{
ch = getchar();
} while (ch != 'Y' && ch != 'N');
if (ch != 'Y')
{
record->second.year = 0;
printf("请尽快接种第二针疫苗!\n");
}
else
{
printf("请输入第二针疫苗接种日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->second.year, &record->second.month, &record->second.day);
}
}
}
void addRecord(struct Record **library)
{
struct Record *record, *temp;
record = (struct Record *)malloc(sizeof(struct Record));
if (record == NULL)
{
printf("内存分配失败!\n");
exit(1);
}
getInput(record);
if (*library != NULL)
{
temp = *library;
*library = record;
record->next = temp;
}
else
{
*library = record;
record->next = NULL;
}
}
void printRecord(struct Record *library)
{
struct Record *record = library;
while (record != NULL)
{
printf("姓名是:%s\n", record->name);
printf("年龄是:%d\n", record->age);
if (record->first.year == 0)
{
printf("未接种疫苗!\n");
}
else
{
printf("第一针接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day);
}
if (record->first.year != 0 && record->second.year == 0)
{
printf("未接种第二针疫苗!\n");
}
else if (record->second.year != 0)
{
printf("第二针接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day);
}
record = record->next;
}
}
void releaseRecord(struct Record **library)
{
struct Record *temp;
while (*library != NULL)
{
temp = *library;
*library = temp->next;
free(temp);
}
}
int main(void)
{
struct Record *library = NULL;
char ch;
while (1)
{
printf("请问是否需要录入(Y/N):");
do
{
ch = getchar();
} while (ch != 'Y' && ch != 'N');
if (ch == 'Y')
{
addRecord(&library);
}
else
{
break;
}
}
printf("请问是否需要打印录入信息(Y/N):");
do
{
ch = getchar();
} while (ch != 'Y' && ch != 'N');
if (ch == 'Y')
{
printRecord(library);
}
releaseRecord(&library);
return 0;
}
希望能帮到你!
以上回复来自 FishC AI 小助理,如未能正确解答您的问题,请继续追问。 FishC 发表于 2024-4-15 17:27
你的代码有几个小问题:
1. 在结构体Record中,name应该是一个字符串类型char name,而不是单个字 ...
在这段代码中print Record并没有调用成功。 liyifeng295641 发表于 2024-04-15 17:39
在这段代码中print Record并没有调用成功。
非常抱歉,我犯了一个错误。在printRecord函数中,应该把struct Record *record = library;的声明放在while循环之前,以便正确初始化record指针。请修改printRecord函数如下:
void printRecord(struct Record *library){
struct Record *record = library;
while (record != NULL) {
printf("姓名是:%s\n", record->name);
printf("年龄是:%d\n", record->age);
if (record->first.year == 0) {
printf("未接种疫苗!\n");
}
else {
printf("第一针接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day);
}
if (record->second.year == 0) {
printf("未接种第二针疫苗!\n");
} else {
printf("第二针接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day);
}
record = record->next;
}
}
这样应该就可以正确打印录入的信息了。请再次尝试运行代码。如果还有其他问题,请随时告诉我。
以上回复来自 FishC AI 小助理,如未能正确解答您的问题,请继续追问。 FishC 发表于 2024-4-15 17:39
非常抱歉,我犯了一个错误。在printRecord函数中,应该把struct Record *record = library;的声明放在w ...
请问是否需要录入(Y/N):Y
请输入姓名:小甲鱼
请输入年龄:21
请问是否接种过疫苗(Y/N):N
请尽快接种疫苗!请问是否需要录入(Y/N):N
请问是否需要打印(Y/N):Y
然后没有打印结果。 liyifeng295641 发表于 2024-04-15 17:42
请问是否需要录入(Y/N):Y
请输入姓名:chenxing
请输 ...
非常抱歉给你带来的困扰。在你的代码中,printRecord函数中的record指针没有初始化为library,导致循环无法正常执行。请将printRecord函数修改如下:void printRecord(struct Record *library){ struct Record *record = library; while (record != NULL) { printf("姓名是:%s\n", record->name); printf("年龄是:%d\n", record->age); if (record->first.year == 0) { printf("未接种疫苗!\n"); } else { printf("第一针接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day); } if (record->second.year == 0) { printf("未接种第二针疫苗!\n"); } else { printf("第二针接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day); } record = record->next; }}同时,main函数中需要增加一个确认是否打印的判断语句,才能正确调用printRecord函数。请将main函数修改如下:int main(void){ struct Record *library = NULL; char ch; while (1) { printf("请问是否需要录入(Y/N):"); do { ch = getchar(); } while (ch != 'Y' && ch != 'N'); if (ch == 'Y') { addRecord(&library); } else { break; } } printf("请问是否需要打印(Y/N):"); do { ch = getchar(); } while (ch != 'Y' && ch != 'N'); if (ch == 'Y') { printRecord(library); } releaseRecord(&library); return 0;}请再次尝试运行代码。如果还有其他问题,请随时告诉我。
以上回复来自 FishC AI 小助理,如未能正确解答您的问题,请继续追问。 FishC 发表于 2024-4-15 17:43
非常抱歉给你带来的困扰。在你的代码中,printRecord函数中的record指针没有初始化为library,导致循环 ...
#include <stdio.h>
#include <stdlib.h>
struct Date
{
int year;
int month;
int day;
};
struct Record
{
char name;
int age;
struct Date first;
struct Date second;
struct Record *next;
};
void getInput(struct Record *record)
{
char ch;
printf("请输入姓名:");
scanf("%s", record->name);
printf("请输入年龄:");
scanf("%d", &record->age);
printf("请问是否接种过疫苗(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch != 'Y')
{
record->first.year = 0;
printf("请尽快接种疫苗!");
}
else
{
printf("请输入第一针疫苗接种的日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->first.year, &record->first.month, &record->first.day);
printf("请问是否接种第二针疫苗(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch != 'Y')
{
record->second.year = 0;
printf("请尽快接种第二针疫苗!");
}
else
{
printf("请输入第二针疫苗接种日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->second.year, &record->second.month, &record->second.day);
}
}
}
void addRecord(struct Record **library)
{
struct Record *record, *temp;
record = (struct Record *)malloc(sizeof(struct Record));
if(record == NULL)
{
printf("内存分配失败!");
exit(1);
}
getInput(record);
if(*library != NULL)
{
temp = *library;
*library = record;
record->next = temp;
}
else
{
*library = record;
record->next = NULL;
}
}
void printRecord(struct Record *library)
{
struct Record *record = library;
while(record != NULL)
{
printf("姓名是:%s\n", record->name);
printf("年龄是:%d\n", record->age);
if(record->first.year == 0)
{
printf("未接种疫苗!\n");
}
else
{
printf("第一针接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day);
}
if(record->first.year != 0 && record->second.year == 0)
{
printf("未接种第二针疫苗!\n");
}else if(record->second.year != 0)
{
printf("第二针接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day);
}
record = record->next;
}
}
void releaseRecord(struct Record **library)
{
struct Record *temp;
while(*library != NULL)
{
temp = *library;
*library = temp->next;
free(temp);
}
}
int main(void)
{
struct Record *library = NULL;
char ch;
while(1)
{
printf("请问是否需要录入(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch == 'Y')
{
addRecord(&library);
}
else
{
break;
}
}
printf("请问是否需要打印(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' || ch != 'N');
if(ch == 'Y')
{
printRecord(library);
}
releaseRecord(&library);
return 0;
}
FishC 发表于 2024-4-15 17:43
非常抱歉给你带来的困扰。在你的代码中,printRecord函数中的record指针没有初始化为library,导致循环 ...
printRecord()函数有问题吗? liyifeng295641 发表于 2024-04-15 17:43
#include
#include
struct Date
{
int year; ...
你的代码基本上没有问题了,只有一处小错误需要修改。在main函数中,检查是否需要打印的循环中,while循环的条件判断写错了,应该是ch != 'Y' && ch != 'N',而不是ch != 'Y' || ch != 'N',因为只要ch不等于Y并且不等于N,循环就会一直执行。请将代码修改如下:
#include <stdio.h>
#include <stdlib.h>
struct Date{
int year;
int month;
int day;
};
struct Record{
char name;
int age;
struct Date first;
struct Date second;
struct Record *next;
};
void getInput(struct Record *record){
char ch;
printf("请输入姓名:");
scanf("%s", record->name);
printf("请输入年龄:");
scanf("%d", &record->age);
printf("请问是否接种过疫苗(Y/N):");
do{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch != 'Y'){
record->first.year = 0;
printf("请尽快接种疫苗!\n");
}
else{
printf("请输入第一针疫苗接种的日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->first.year, &record->first.month, &record->first.day);
printf("请问是否接种第二针疫苗(Y/N):");
do{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch != 'Y'){
record->second.year = 0;
printf("请尽快接种第二针疫苗!\n");
}
else{
printf("请输入第二针疫苗接种日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->second.year, &record->second.month, &record->second.day);
}
}
}
void addRecord(struct Record **library){
struct Record *record, *temp;
record = (struct Record *)malloc(sizeof(struct Record));
if(record == NULL){
printf("内存分配失败!\n");
exit(1);
}
getInput(record);
if(*library != NULL){
temp = *library;
*library = record;
record->next = temp;
}
else{
*library = record;
record->next = NULL;
}
}
void printRecord(struct Record *library){
struct Record *record = library;
while(record != NULL){
printf("姓名是:%s\n", record->name);
printf("年龄是:%d\n", record->age);
if(record->first.year == 0){
printf("未接种疫苗!\n");
}
else{
printf("第一针接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day);
}
if(record->first.year != 0 && record->second.year == 0){
printf("未接种第二针疫苗!\n");
}
else if(record->second.year != 0){
printf("第二针接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day);
}
record = record->next;
}
}
void releaseRecord(struct Record **library){
struct Record *temp;
while(*library != NULL){
temp = *library;
*library = temp->next;
free(temp);
}
}
int main(void){
struct Record *library = NULL;
char ch;
while(1){
printf("请问是否需要录入(Y/N):");
do{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch == 'Y'){
addRecord(&library);
}
else{
break;
}
}
printf("请问是否需要打印(Y/N):");
do{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch == 'Y'){
printRecord(library);
}
releaseRecord(&library);
return 0;
}
希望能帮到你!
以上回复来自 FishC AI 小助理,如未能正确解答您的问题,请继续追问。 liyifeng295641 发表于 2024-04-15 17:44
printRecord()函数有问题吗?
非常抱歉,我犯了一个错误。在printRecord函数中,如果第一针疫苗接种了但第二针疫苗未接种,应该打印"未接种第二针疫苗!"。修改printRecord函数如下所示:void printRecord(struct Record *library){ struct Record *record = library; while (record != NULL) { printf("姓名是:%s\n", record->name); printf("年龄是:%d\n", record->age); if (record->first.year == 0) { printf("未接种疫苗!\n"); } else { printf("第一针接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day); } if (record->second.year == 0) { printf("未接种第二针疫苗!\n"); } else { printf("第二针接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day); } record = record->next; }}请尝试运行修改后的代码,应该能正常打印录入信息。如果还有其他问题,请随时告诉我。
以上回复来自 FishC AI 小助理,如未能正确解答您的问题,请继续追问。 FishC 发表于 2024-4-15 17:48
非常抱歉,我犯了一个错误。在printRecord函数中,如果第一针疫苗接种了但第二针疫苗未接种,应该打印" ...
#include <stdio.h>
#include <stdlib.h>
struct Date
{
int year;
int month;
int day;
};
struct Record
{
char name;
int age;
struct Date first;
struct Date second;
struct Record *next;
};
void getInput(struct Record *record)
{
char ch;
printf("请问姓名是:");
scanf("%s", record->name);
printf("请问年龄是:");
scanf("%d", &record->age);
printf("请问是否接种过疫苗(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch == 'Y')
{
printf("请输入第一针疫苗接种的日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->first.year, &record->first.month, &record->first.day);
printf("请问是否接种过第二针疫苗(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch == 'Y')
{
printf("请输入第二针疫苗接种的日期(yyyy-mm-dd):");
scanf("%d-%d-%d", &record->second.year, &record->second.month, &record->second.day);
}
else
{
record->second.year = 0;
printf("请尽快接种第二针疫苗!");
}
}
else
{
record->first.year = 0;
printf("请尽快接种疫苗!");
}
putchar('\n');
}
void addRecord(struct Record **head)
{
struct Record *record , *temp;
record = (struct Record *)malloc(sizeof(struct Record));
if(record == NULL)
{
printf("内存分配失败!");
exit(1);
}
getInput(record);
if(record != NULL)
{
temp = *head;
*head = record;
record -> next = temp;
}
else
{
*head = record;
record -> next = NULL;
}
}
void printRecord(struct Record *head)
{
struct Record *record;
record = head;
while(record != NULL)
{
printf("姓名:%s, 年龄:%d\n", record->name, record->age);
if(record->first.year != 0)
{
printf("第一针疫苗的接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day);
if(record->second.year != 0 && record->first.year != 0)
{
printf("第二针疫苗的接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day);
}
else if(record->first.year != 0 && record->second.year == 0)
{
printf("未接种第二针疫苗!\n");
}
}
else
{
printf("未接种疫苗!\n");
}
record = record -> next;
}
}
void releaseRecord(struct Record *head)
{
struct Record *temp;
while(head != NULL)
{
temp = head;
head = head->next;
free(temp);
}
}
int main(void)
{
struct Record *head;
char ch;
while(1)
{
printf("请问是否需要录入(Y/N):");
do
{
ch = getchar();
}while(ch != 'Y' && ch != 'N');
if(ch == 'Y')
{
addRecord(&head);
}
else
{
break;
}
}
printRecord(head);
releaseRecord(head);
return 0;
}
@FishC,帮我找下bug liyifeng295641 发表于 2024-04-16 16:30
#include
#include
struct Date
{
int year; ...
你的代码有一些小问题,我帮你修改了一下,请看下面的代码:#include #include struct Date{ int year; int month; int day;};struct Record{ char name; int age; struct Date first; struct Date second; struct Record *next;};void getInput(struct Record *record){ char ch; printf("请问姓名是:"); scanf("%s", record->name); printf("请问年龄是:"); scanf("%d", &record->age); printf("请问是否接种过疫苗(Y/N):"); do { ch = getchar(); } while (ch != 'Y' && ch != 'N'); if (ch == 'Y') { printf("请输入第一针疫苗接种的日期(yyyy-mm-dd):"); scanf("%d-%d-%d", &record->first.year, &record->first.month, &record->first.day); printf("请问是否接种过第二针疫苗(Y/N):"); do { ch = getchar(); } while (ch != 'Y' && ch != 'N'); if (ch == 'Y') { printf("请输入第二针疫苗接种的日期(yyyy-mm-dd):"); scanf("%d-%d-%d", &record->second.year, &record->second.month, &record->second.day); } else { record->second.year = 0; printf("请尽快接种第二针疫苗!"); } } else { record->first.year = 0; printf("请尽快接种疫苗!"); } putchar('\n');}void addRecord(struct Record **head){ struct Record *record, *temp; record = (struct Record *)malloc(sizeof(struct Record)); if (record == NULL) { printf("内存分配失败!"); exit(1); } getInput(record); if (*head != NULL) { temp = *head; *head = record; record->next = temp; } else { *head = record; record->next = NULL; }}void printRecord(struct Record *head){ struct Record *record; record = head; while (record != NULL) { printf("姓名:%s, 年龄:%d\n", record->name, record->age); if (record->first.year != 0) { printf("第一针疫苗的接种日期:%d-%d-%d\n", record->first.year, record->first.month, record->first.day); if (record->second.year != 0 && record->first.year != 0) { printf("第二针疫苗的接种日期:%d-%d-%d\n", record->second.year, record->second.month, record->second.day); } else if (record->second.year == 0 && record->first.year != 0) { printf("未接种第二针疫苗!\n"); } } else { printf("未接种疫苗!\n"); } record = record->next; }}void releaseRecord(struct Record *head){ struct Record *temp; while (head != NULL) { temp = head; head = head->next; free(temp); }}int main(void){ struct Record *head = NULL; char ch; while (1) { printf("请问是否需要录入(Y/N):"); do { ch = getchar(); } while (ch != 'Y' && ch != 'N'); if (ch == 'Y') { addRecord(&head); } else { break; } } printRecord(head); releaseRecord(head); return 0;}主要修改的地方有以下几点:1. 在结构体Record中,name应该是一个字符串类型char name,而不是单个字符char name。2. 在getInput函数中,接收字符串输入时应该使用%s,而不是%s。3. 在printRecord函数中,判断是否接种第二针疫苗时,应该是record->second.year == 0,而不是record->first.year == 0。4. 在main函数中,调用addRecord函数之前应该先初始化head指针为NULL,否则会出现未定义行为。希望能帮到你!
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