# include & ltstdio.h & gt
# include & ltstring.h & gt
# include & ltstdlib.h & gt
#define LEN sizeof (structural address book)
# Define Max 100
void InitDialBook(void)；
void user interface(void)； /* Menu function */
Invalid load (void);
void Add(void)；
Void Find (invalid);
Void Modify (invalid);
Void Delete (void);
Void ShowAll (invalid);
Void Save (void);
Structural address book {
Int record;
char name[ 15]；
char sex[4]；
Char age [4];
char addr[20]；
Charging phone [15];
char QQ[ 15]；
char Meg[40]； /* Personal signature */
struct addbook * link
};
FILE * fp
struct addbook *p，*p 1，*head，*s，* t；
Master ()
{
Int mark;
Int selection;
if((fp = fopen("zzxx.txt "，" Rb ")= = NULL)
{ clr SCR()；
Printf ("\ n \ n \ t \ tThe file does not exist! \ n ")；
if((fp = fopen("zzxx.txt "，" WB ")= = NULL)
{
Printf ("File open error! \ n ")；
getch()；
Exit (0);
}
}
if(fgetc(fp)==- 1)
{
Printf(" \ n \ t \ t tThere is no information in the address book. Now, you must add information. \ n ")；
InitDialBook()；
Printf(" \ n \ t \ t \ t tAdded successfully! \ n ")；
Printf ("\ n \ t \ tIf you want to add more people's information, please reopen the program \ n");
getch()；
Exit (0);
}
Rewind (FP); /* Rebuild file pointer */
load()；
fclose(FP)；
/* printf ("\ nThis is the %d member in the file. \n "，p-& gt； Records); */
flag = 1；
While (sign)
{
user interface()；
Printf ("Please enter your choice: (0-5):");
Scanf("%d ",& select);
getchar()；
If (select & gt= 0 & amp& amp select & lt6)
{
Switch (selection)
{
Case 1:
add()； Break;
Case 2:
find()； Break;
Case 3:
ShowAll()； Break;
Case 4:
delete()； Break;
Case 5:
modify()； Break;
Case 0:
flag = 0；
clr SCR()；
Printf ("\ n \ n \ n \ t \ tThank you for using this address book system! ! !" );
Printf ("\ n \ n \ t \ tIf you have any requirements or suggestions during use, please contact:");
Printf ("\ n \ n \ t \ tzzzx2001@126.com or QQ: 279252614");
getch()；
Break;
}
}
Otherwise {
Printf ("Input error, please select again! \ n ")；
}
}
fp = fopen("zzxx.txt "，" WB ")；
save()；
fclose(FP)； clr SCR()；
Printf(" \ n \ n \ n \ t \ t tPress any key to exit! \ n ")；
getch()；
Returns 0;
}
Voidinitialbook (void)/* Initialize file function */
{
p->； Record =1;
Printf(" \ n \ n \ t \ t tPlease enter a name: ");
Get (p->; Name);
Printf(" \ n \ t \ t tPlease enter gender: ");
Get (p->; Sex);
Printf(" \ n \ t \ t tPlease enter age: ");
Get (p->; Age);
Printf(" \ n \ t \ t tPlease enter an address: ");
Get (p->; addr)；
Printf(" \ n \ t \ t tPlease enter a phone number: ");
Get (p->; Telephone);
Printf(" \ n \ t \ t tPlease enter QQ number: ");
Get (p->; QQ)；
Printf(" \ n \ t \ t tPlease enter a personalized signature: ");
Get (p->; Meg)；
p->； link = NULL
head = p；
fwrite(p，LEN， 1，FP)；
fclose(FP)；
}
void user interface(void)/* menu */
{ clr SCR()；
printf(" \ n \ t \ t * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * \ n ")；
Printf ("\ t \ t \ tWelcome to the address book management system");
printf(" \ n \ t \ t * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * \ n ")；
Printf ("\ n \ n \ t \ t * * * * Please select your operation * * * \ n ");
printf(" \ t \ t \ t++ ")；
Printf ("\ t \ t \ t \ t |1Add Personal Information | \ n");
Printf ("\ t \ t | 2 Search information (including deleting \ modifying information) | \ n ");
Printf ("\ t \ t | 3 Show all information | \ n ");
Printf ("\ t \ t | 4 Delete information | \ n ");
Printf ("\ t \ t | 5 Modify information | \ n ");
Printf ("\ t \ t | 0Exit and save | \ n");
printf(" \ t \ t \ t++ \ n ")；
Printf ("\ n \ n \ tAttention! ! The number entered (phone number or QQ) must be in English status, and Chinese status cannot be entered! ! \ n \ n ")；
}
Void Load(void)/* read file */
{
fread(head，LEN， 1，FP)；
P = head;
while(p->； Link! =NULL){
p 1 =(struct addbook *)malloc(LEN)；
p 1 = p->； Link;
fread(p 1，LEN， 1，FP)；
p = p-& gt； Link;
}
}
Voideadd (void)/* input function */
{
p 1 =(struct addbook *)malloc(LEN)；
p 1->； record = p-& gt； Record+1; clr SCR()；
printf(" \ n \ n \ t \ t \ t-\ n ")；
Printf ("\ t \ t \ t \ t \ tPlease enter information \ n");
printf(" \ t \ t \ t-\ n ")；
Printf(" \ n \ t \ t \ t tThis is a member of %d ",p-> Record+1);
Printf(" \ n \ t \ t \ t tPlease enter a name: ");
Get (p1->; Name);
Printf(" \ n \ t \ t \ t tPlease enter gender: ");
Get (p1->; Sex);
Printf(" \ n \ t \ t \ t tPlease enter age: ");
Get (p1->; Age);
Printf(" \ n \ t \ t \ t tPlease enter an address: ");
Get (p1->; addr)；
Printf(" \ n \ t \ t \ t tPlease enter a phone number: ");
Get (p1->; Telephone);
Printf(" \ n \ t \ t \ t tPlease enter QQ number: ");
Get (p1->; QQ)；
Printf(" \ n \ t \ t \ t tPlease enter a personalized signature: ");
Get (p1->; Meg)；
p 1->； link = NULL
p->； link = p 1；
p = p 1；
}
Void ShowAll(void)/* Show all functions */
{
S = head;
clr SCR()；
printf(" \ n \ n ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ n ")；
Printf(" \ t t tSerial number name gender age address telephone QQ number personalized signature ");
printf(" \ n ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ n ")；
Do {
printf(" \ t %-6d %- 10s %-8s %-7s %- 10s %- 10s %-s %-s \ n "，s-& gt； Record, s-> Name, s-> Sex,
s-& gt； Age, s-> addr，s-& gt； Telephone, s-> qq，s-& gt； Meg)；
s = s-& gt； Link;
}while(s！ = NULL)；
Printf(" \ n \ n \ n \ t \ t tPress any key to exit! " );
getch()；
Return;
}
Void Find(void)/* Find function */
{
char c；
struct addbook who
S = head;
clr SCR()；
Printf(" \ n \ t \ t tPlease enter the name of the person you are looking for: ");
Get (who.name);
while((s-& gt； Link! = NULL)& amp； & amp(strcmp(s-& gt； Name, who.name))
{
s = s-& gt； Link;
}
if((s-& gt； link = = NULL)& amp； & amp(strcmp(s-& gt； Name, who.name))
{
Printf("% s ") does not exist! \n "，who . name)；
Printf ("Please check the name before searching. \ n ")；
getch()；
Return;
}
clr SCR()；
Printf("\n\t\t\t\ The information to be searched is as follows: \ n ");
printf(" \ n * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * \ n ")；
Printf ("\ tSerial number name gender age address telephone QQ number personalized signature");
printf(" \ n * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * \ n ")；
printf(" \ t %-6d %- 10s %-8s %-7s %-8s %- 10s %-s %-s \ n "，s-& gt； Record, s-> Name, s-> Sex, s-> Age, s-> Age,
s-& gt； addr，s-& gt； Telephone, s-> qq，s-& gt； Meg)；
printf(" \ n \ t \ t delete(d)\ Modify(m)\ Browse(s)\ n ")；
Printf ("\ n \ tPlease enter your choice (d/m/s):");
scanf("%c "，& ampc)；
Switch (c)
{
Case "d":
Case "d": delete (); Break;
Case "m":
Case "m": modify (); Break;
}
}
Invalid modification (invalid)
{ getchar()；
Printf(" \ n \ t \ t tPlease enter a new name: ");
Get (s->; Name);
Printf(" \ n \ t \ t tPlease enter a new gender: ");
Get (s->; Sex);
Printf(" \ n \ t \ t tPlease enter a new age: ");
Get (s->; Age);
Printf(" \ n \ t \ t tPlease enter a new address: ");
Get (s->; addr)；
Printf(" \ n \ t \ t tPlease enter a new phone number: ");
Get (s->; Telephone);
Printf(" \ n \ t \ t tPlease enter a new QQ number: ");
Get (s->; QQ)；
Printf(" \ n \ t \ t tPlease enter a new personalized signature: ");
Get (s->; Meg)；
Printf(" \ n \ t \ t tModified successfully! \ n ")；
getch()；
}
Void Delete(void)/* Delete function */
{
int find _ prev
int find _ record
char del
char del _ member _ name[ 15]；
struct addbook * p _ del _ prev
strcpy(del_member_name，s-& gt； Name);
getchar()；
Printf ("Are you sure you want to delete %s (Y/N)?" ，del _ member _ name)；
scanf("%c "，& ampdel)；
if(del=='n'||del=='N ')
{
Return;
}
find _ prev = s-& gt； Record-1;
find _ record = 1；
p _ del _ prev = head
while((p _ del _ prev-& gt； Link! = NULL)& amp； & amp(find _ record & ltfind_prev))
{
p _ del _ prev = p _ del _ prev-& gt； Link;
find _ record++；
}
/* If the first member is deleted */
if(s-& gt； Record == 1)
{
if(s-& gt； Link! = empty)
{
head = head-& gt； Link;
S = head;
while(s！ = empty)
{
s-& gt； record = s-& gt； Record-1;
s = s-& gt； Link;
}
printf("%d，%s "，p-& gt； Record, p-> Name);
}
else if(s-& gt； Link==NULL){ /* If the first member is the last */
p = NULL
head = p；
if(remove("zzxx.txt")==0){
Printf ("You have deleted the last member, and the address book has been emptied! \ n ")；
Printf ("So, you must re-create the address book! \ n ")；
Printf ("Reopen program creation. \ n ")；
}
Printf(" \ n \ n \ t \ t tPress any key to exit. \ n ")；
getch()；
Exit (0);
}
}
/* If the last member is deleted */
else if(s-& gt； record = = p-& gt； Record) {
p _ del _ prev-& gt； link = NULL
s-& gt； link = NULL
p = p _ del _ prev
}
Otherwise {
p _ del _ prev-& gt； link = s-& gt； Link;
s-& gt； link = NULL
while(p _ del _ prev->； Link! = empty)
{
p _ del _ prev = p _ del _ prev-& gt； Link;
p _ del _ prev-& gt； record = p _ del _ prev-& gt； Record-1;
}
printf("%d\n%d\n "，p-& gt； Record, p-> Link);
}
Printf ("member \"%s\" has been deleted. \n "，del _ member _ name)；
getch()；
}
Void Save(void)/* Save file */
{
S = head;
Do {
fwrite(s，LEN， 1，FP)；
s = s-& gt； Link;
}while(s！ = NULL)；
}
Label: c language