重新检查了一下,更正了功能2和功能5的错误
正确代码#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct Person
{
char name[40];
char phone[20];
struct Person* next;
};
void getInput(struct Person* person);//获取输入联系人信息
void printPerson(struct Person* person);//打印联系人
void addPerson(struct Person** contacts);//增加新的联系人
void changePerson(struct Person* contacts);//更改已有联系人
void delPerson(struct Person** contacts);//删除已有联系人
struct Person* findPerson(struct Person* person);//查询已有联系人
void displayContacts(struct Person* person);//打印通讯录
void relaseContacts(struct Person** contacts);//结束程序,释放内存
void getInput(struct Person* person)
{
printf("请输入姓名:");
scanf("%s", person->name);
printf("请输入电话:");
scanf("%s", person->phone);
}
void addPerson(struct Person** contacts)
{
struct Person* person;
struct Person* temp;
person = (struct Person*)malloc(sizeof(struct Person));
if (person == NULL)
{
printf("内存分配失败!\n");
exit(1);
}
getInput(person);
if (*contacts != NULL)
{
temp = *contacts;
*contacts = person;
person->next = temp;
}
else
{
*contacts = person;
person->next = NULL;
}
}
void printPerson(struct Person* person)
{
printf("联系人:%s\n", person->name);
printf("电话:%s\n", person->phone);
}
struct Person* findPerson(struct Person* contacts)
{
struct Person* current;
char input[40];
printf("请输入联系人:");
scanf("%s", input);
current = contacts;
while (current != NULL && strcmp(current->name, input))
{
current = current->next;
}
return current;
}
void changePerson(struct Person* contacts)
{
struct Person* person;
person = findPerson(contacts);
if (person == NULL)
{
printf("找不到该联系人!\n");
}
else
{
printf("请输入新的联系电话:");
scanf("%s", person->phone);
}
}
void delPerson(struct Person** contacts)
{
struct Person* tenp;
struct Person* person;
struct Person* current;
struct Person* previous;
person = findPerson(*contacts);
if (person == NULL)
{
printf("找不到该联系人!\n");
}
else
{
current = *contacts;
previous = NULL;
while (current != NULL && current != person)
{
previous = current;
current = current->next;
}
if (previous == NULL)
{
*contacts = current->next;
}
else
{
previous->next = current->next;
}
free(person);
}
}
void displayContacts(struct Person* contacts)
{
struct Person* current;
current = contacts;
while (current != NULL)
{
printPerson(current);
current = current->next;
}
}
void relaseContacts(struct Person** contacts)
{
struct Person* temp;
while (*contacts != NULL)
{
temp = *contacts;
*contacts = temp->next;
free(temp);
}
}
int main(void)
{
int code;
struct Person* contacts = NULL;
struct Person* person;
printf("| 欢迎使用通讯录管理程序 |\n");
printf("|--- 1:插入新的联系人 ---|\n");
printf("|--- 2:查找已有联系人 ---|\n");
printf("|--- 3:更改已有联系人 ---|\n");
printf("|--- 4:删除已有联系人 ---|\n");
printf("|--- 5:显示当前通讯录 ---|\n");
printf("|--- 6:退出通讯录程序 ---|\n");
printf("|- Powered by FishC.com -|\n");
while (1)
{
printf("\n请输入指令代码:");
scanf("%d", &code);
switch (code)
{
case 1:addPerson(&contacts); break;
case 2:person = findPerson(contacts);
if (person == NULL)
{
printf("找不到该联系人!\n");
}
else
{
printPerson(person);
}
break;
case 3:changePerson(contacts); break;
case 4:delPerson(&contacts); break;
case 5:displayContacts(contacts); break;
case 6:goto END;
}
}
END:
relaseContacts(&contacts);
return 0;
}
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