C language course set up property fee management system (big work)

One 、 Design function ( The article is for reference only )

Functional requirements ：
（1） Addition of new household information .（ Name of the householder 、 Gender 、 ID number 、 contact number 、 Building number 、 Unit no. 、 room number 、 Number of square meters 、 Property price per square meter 、 Property fee payable , Notes ）
（2） Function of modifying household information .
（3） The function of deleting household information .
（4） The property fee payable is automatically generated . monthly 1 Number , Automatically generate the property fee of this month . If the previous property fee of the resident has not been paid , Then the property fee of this month will be accumulated with the previous arrears , It is the property fee that the user should pay .
（5） Payment function . According to the amount paid by the user , modify “ Property fee payable ”.
（6） Statistical function ： Be able to count all outstanding property fees by building number . According to the amount of arrears , Sort all user information from large to small .
（7） Manage with menu

Two 、 Function display

3、 ... and 、 Mind mapping

Four 、 Program source code

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<malloc.h>
#include<conio.h> // Function declaration //
int mainmenu(); // The main menu 
void xinximenu(); // Property information menu 
void tongjimenu();// Statistics query menu 
void mychaozhao(); // List of arrears 
void yezhumenu();// Owner menu 
void wuyemenu();// Property menu 
void myAdd1();// Enter the owner information 
void myAdd2(); // Enter property information 
void myDelete1();// Delete owner information 
void myDelete2();// Delete property information 
void myReplace1();// Modify the owner's information 
void myReplace2();// Modify property information 
void Display1();// Browse the owner information 
void Display2();// Browse property information 
void myfind();// Check payment 
void Display(struct wuye *p);
void Read1();
void Read2();
void save1(struct yezhu *p);// Save owner information to file 
void save2(struct wuye *p);// Save property information to file 
struct yezhu *find1(char *id); // Find the owner information 
struct wuye *find2(char *id);// Find property information `
struct yezhu *myAdd3(struct yezhu *p);// Add owner information 
struct wuye *myAdd4(struct wuye *p);
struct yezhu {
      // Owner's structure //
char id[100];
 char name[20];
 char sex[5];
 int phone_num;
 int floor_num;
 char room_num[100];
 float lost;
 int area;
 char rz_time[20];
 char bz[100];
 struct yezhu *next;
};
struct wuye {
       // Property information structure //
 char ID[100];
 int last_year;
 int last_month;
 float money;
 int to_time;
 struct wuye *link;
};
struct yezhu *phead; // Owner's head node 
struct wuye *pHead; // Property head node 
int mainmenu()// The main menu //

{
    
 int n;
 printf("************************** Welcome to the community property management system ***************************\n");
 printf("-----------------------------------------------------------------------------\n");
 printf("* * * * * * * * * * * * * * * 〓 Please select 〓13* * * * * * * * * * * * * * *\n");
 printf("* *\n"); printf("* *\n");
 printf("* ⒈ Property information system  *\n");
 printf("* *\n");
 printf("* ⒉ Statistical query system  *\n");
 printf("* *\n");
 printf("* ⒊ Exit procedure . *\n");
 printf("* *\n");
 printf("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
 printf(" Please enter the options *№:");
 scanf("%d",&n);
 return n;
}

void xinximenu()// The property information menu displays //
{
    
 int choose;
 do {
    
  ("***************************** matter   trade   Letter   Rest   system   system ************************************\n");
  printf("-----------------------------------------------------------------------------\n");
  printf("* * * * * * * * * * * * * * * 〓 Please select 〓13* * * * * * * * * * * * * * *\n");
  printf("* *\n");
  printf("* *\n");
  printf("* ⒈ Community owner information management  *\n");
  printf("* *\n");
  printf("* ⒉ Property expense information management  *\n");
  printf("* *\n");
  printf("* ⒊ Back to main menu . *\n");
  printf("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
  printf(" Please enter the options *№:");
  scanf("%d",&choose);
  switch(choose)
   {
    
    case 1:yezhumenu();
     break;
    case 2:wuyemenu();
     break;
    case 3:return;
    default:printf(" Input error  Please re-enter \n");
   }
  } while(1); }

void tongjimenu() // The statistics query menu displays //
{
    

 int choose;
  {
    
  printf("****************************** system   meter   check   Inquiry   system   system ***********************************\n");
  printf("-----------------------------------------------------------------------------\n");
  printf("* * * * * * * * * * * * * * * 〓 Please select 〓13* * * * * * * * * * * * * * *\n");
  printf("* *\n");
  printf("* *\n");
  printf("* ⒈ Query payment information  *\n");
  printf("* *\n");
  printf("* ⒉ List of arrears  *\n");
  printf("* *\n");
  printf("* ⒊ Back to main menu . *\n");
  printf("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
  printf(" Please enter the options *№:");
  scanf("%d",&choose);
  switch(choose)
   {
    
    case 1 : myfind();
     break;
    case 2 : mychaozhao();
     break;
    case 3 : return;
    default: printf(" Input error  Please re-enter !\n\n");
   }
}
}

void yezhumenu()  // Owner menu function 
{
    
 int choose;
 do {
    
  printf("******************************** Owner information editing system ******************************-\n");
  printf("-------------------------------------------------------------------------------\n");
  printf("* * * * * * * * * * * * * * * *〓 Please select 〓15* * * * * * * * * * * * * * *\n");
  printf("* *\n");
  printf("* *\n");
  printf("* ⒈ Owner information entry  *\n");
  printf("* *\n");
  printf("* ⒉ Owner information modification  *\n");
  printf("* *\n");
  printf("* ⒊ The owner information is deleted  *\n");
  printf("* *\n");
  printf("* ⒋ Browse the owner's information  *\n");
  printf("* *\n");
  printf("* ⒌ Go back to the upper menu . *\n");
  printf("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
  printf(" Please enter the option *№");
  scanf("%d",&choose);
  //getchar();
  switch(choose)
   {
    
    case 1 :myAdd1();
     break;
    case 2 :myReplace1();
     break;
    case 3 :myDelete1();
     break;
    case 4 :Display1();
     break;
    case 5 : return;
    default: printf(" Input error  Please re-enter \n");
   }
  } while(1);
}

void myAdd1()// Enter the owner information //
 {
    
 struct yezhu *p;
 p=(struct yezhu *)malloc(sizeof(struct yezhu));
 printf(" Please enter the owner information \n");
 printf("ID:");
 scanf("%s",p->id);
 printf(" full name :");
 scanf("%s",p->name);
 printf(" Gender ");
 scanf("%s",&p->sex);
 printf(" contact number ");
 scanf("%d",&p->phone_num);
 printf(" Building number ");
 scanf("%d",&p->floor_num);
 printf(" Unit room number :");
 scanf("%s",p->room_num);
 printf(" Property price per square meter :");
 scanf("%d",&p->area);
 printf(" Property fee payable ");
 scanf("%s",p->rz_time);
 printf(" remarks ");
 scanf("%s",p->bz);
 myAdd3(p);
 savel(p);
 printf(" Input succeeded !\n");
 }
struct yezhu *myAdd3(struct yezhu *p)// Add the owner information node //
{
    
 struct yezhu *t;
 if(phead==NULL)
  {
    
   phead=p;
   p->next=NULL;
  }
 else
  {
    
   t=phead;
   while(t->next!=NULL)
     t=t->next;
   t->next=p;
   p->next=NULL;
   return phead;

  }
}

void myReplace1()// Modify the owner's information 
{
    
 struct yezhu *k;
 char id[100];
 printf(" Please enter the owner to be modified ID:");
 scanf("%s",id);
 k=find1(id);
 if(k!=NULL)
  {
    
   printf(" Please enter the owner information to be modified \n");
   printf("ID:");
   scanf("%s",k->id);
   printf(" full name :");
   scanf("%s",k->name);
   printf(" Gender ");
   scanf("%d",&k->sex);
   printf(" contact number ");
   scanf("%d",&k->phone_num);
  scanf("%d",&k->phone_num);
   printf(" Building number ");
   scanf("%d",&k->floor_num);
   printf(" Unit room number :");
   scanf("%s",k->room_num);
   printf(" Property price per square meter :");
   scanf("%d",&k->area);
   printf(" Property fee payable ");
   scanf("%s",k->rz_time);
   printf(" remarks  ");
   scanf("%s",k->bz);
   savel(k);
   printf(" Modification successful !\n");
  }
 else
  {
    
   printf(" No such owner ID!\n");
   return;
  }
}

struct yezhu *find1(char *id)// adopt ID Find the owner information //
{
    
 struct yezhu *p;
 p=phead;
 while(p!=NULL)

 {
    
   if(strcmp(p->id,id)==0)
    return p;
   p=p->next;
  }
 return NULL;
}

void Display1()
{
    
 struct yezhu *p;
 p=phead;
 p=phead;
 while(p!=NULL)
  {
    
  printf("\n\n");
   printf("ID:%s\n",p->id);
   printf(" full name :%s\n",p->name);
   printf(" Gender :%d\n",p->sex);
   printf(" contact number %d\n",p->phone_num);
   printf(" Building number %d\n",p->floor_num);
   printf(" Unit room number :%s\n",p->room_num);
   printf(" Property price per square meter :%d\n",p->area);
   printf(" Property fee payable %s\n",p->rz_time);
   printf(" remarks  %s\n",p->bz);
   printf("\n\n");
   p=p->next;
  }
}

void myDelete1()
{
    
 struct yezhu *p,*pp;
 struct wuye *k,*kk;
 char id[100];
 pp=phead;
 kk=pHead;
 printf(" Please enter the name of the person you want to delete ID:");
 scanf("%s",id);
 p=find1(id);
 k=find2(id);
 if(p!=NULL)
  {
    
   if(p==phead)
    {
    
     phead=p->next;
     free(p);
    }
else
    {
    
     while(pp->next!=p)
      pp=pp->next;
     pp->next=p->next;
     free(p);
    }
  }
 else
  {
    
   printf(" No such owner ID!\n");
   return;
  }
 printf(" The owner information was deleted successfully !\n");
 savel(p);
 if(k!=NULL)
  {
    
   if(k==pHead)
    {
    
     pHead=k->link;
     free(k);
    }
   else
    {
    
     while(kk->link!=k)
      kk=kk->link;
     kk->link=k->link;
     free(k);
    }
 }
 else
  {
    
   printf(" No such owner ID!\n");
   return;
  }
 printf(" Property information deleted successfully !\n");
 savew(k);
}

void savel(struct yezhu *p)
{
    
 FILE *fp;   // Open file //
 fp=fopen("yezhu.dat","wb");
 p=phead;
 while(p!=NULL)
  {
    
   fwrite(p,sizeof(struct yezhu),1,fp); // Write a block of data to a file //
   p=p->next;
  }
 fclose(fp);
}

void Read1()  // File operation reads data //
{
    
 FILE *fp;
 struct yezhu *p;
 fp=fopen("yezhu.dat","rb");
 while(1)
  {
    
  p=(struct yezhu *)malloc(sizeof(struct yezhu));   // First calculate the bytes and then apply to the system for allocating byte memory space //
  if(feof(fp))  // End of file //
   {
    
    break;
   }
  if(fread(p,sizeof(struct yezhu),1,fp))  // Reading data //
   {
    
    myAdd3(p);
   }
  }
fclose(fp);
}

void wuyemenu()
{
    
 int choose=0;
  do {
    
  printf("********************************* Property cost management system ************************\n");
 printf("-------------------------------------------------------------------------\n");
 printf("* * * * * * * * * * * * * * * 〓 Please select 〓15* * * * * * * * * * * * *\n");
 printf("* * \n");
 printf("* *\n");
 printf("* ⒈ Property information entry  *\n");
 printf("* *\n");
 printf("* ⒉ Property information modification  *\n");
 printf("* *\n");
 printf("* ⒊ Property information deleted  *\n");
 printf("* *\n");
 printf("* ⒋ Property information browsing  *\n");
 printf("* *\n");
 printf("* ⒌ Go back to the upper menu . *\n");
 printf("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
 printf(" Please enter the option ");
 scanf("%d",&choose);
 switch(choose)
  {
    
   case 1: myAdd2();
    break;
   case 2: myReplace2();
    break;
   case 3: myDelete2();
    break;
   case 4: Display2();
    break;
   case 5: return;
   default:printf(" Input error  Please re-enter \n");
}
 } while(1);
}

void myAdd2()// Enter property information //
{
    
 struct wuye *p;
 struct yezhu *t;
 int x;
 p=(struct wuye *)malloc(sizeof(struct wuye));
 printf(" Please enter the property information \n");
 printf("ID:");
 scanf("%s",p->ID);
 t=find1(p->ID);
 if(t!=NULL)
  {
    
   printf(" Last payment year ");
   scanf("%d",&p->last_year);
   printf(" month ");
   scanf("%d",&p->last_month);
   printf(" Payment amount ");
   scanf("%f",&p->money);
   x=p->money/(0.4*t->area);
   p->to_time=(int)x;
   myAdd4(p);
   savew(p);
   printf(" Input succeeded !\n");
  }
 else
  {
    
   printf(" No such owner ID!\n");
   return;
  }
 }
struct wuye *myAdd4(struct wuye *p)// Add a property information node //
{
    
  struct wuye *t;
 if(pHead==NULL)
  {
    
   pHead=p;
   p->link=NULL;
  }
 else
  {
    
   t=pHead;
   while(t->link!=NULL)
    t=t->link;
   t->link=p;
   p->link=NULL;
  }
 return pHead;
}

struct wuye *find2(char *id)// Find payment information by name //
{
    
 struct wuye *p;
 p=pHead;
 while(p!=NULL)
  {
    
   if(strcmp(p->ID,id)==0)
    return p;
   p=p->link;
  }
 return NULL;
 }

void myfind()
{
    
 struct wuye *p;
 char a[100];
 printf(" Please enter the owner you want to find id");
 scanf("%s",a);
 p=find2(a);
 if(p!=NULL)
  {
    
   printf(" The owner has deposited !\n");
  }
 else
  {
    
   printf(" The owner has not deposited the payment information yet !\n");
   return;
  }
 myDisplay(p);
}

void myReplace2()//
{
    
 char id[20];
 int x;
 struct wuye *k;
 struct yezhu *t;
 printf(" Please enter the owner to be modified ID:");
 scanf("%s",id);
 if(k!=NULL)
  {
    
   printf(" The information you want to modify is \n");
   printf(" Please enter new information \n");
   printf("ID:");
   scanf("%s",k->ID);
   printf(" Last payment year ");
   scanf("%d",&k->last_year);
   printf(" month ");
   scanf("%d",&k->last_month);
   printf(" Payment amount ");
   scanf("%f",&k->money);
   t=find1(k->ID);
   x=(int)k->money/(0.4*t->area);
   k->to_time=(int)x;
   myAdd4(k);
   savew(k);
   printf(" Modification successful !\n");
  }
 else
  {
    
   printf(" No such owner ID!\n");
   return;
  }
}

void myDelete2()//
{
    
 struct wuye *p,*pp;
 char id[100];
 pp=pHead;
 printf(" Please enter the name of the person you want to delete ID:");
 scanf("%s",id);
 p=find2(id);
 if(p!=NULL)
  {
    
   if(p==pHead)
    {
    
     pHead=p->link;
     free(p);
    }
   else
    {
    
     while(pp->link!=p)
      pp=pp->link;
     pp->link=p->link;
     free(p);
    }
 }
 else
 {
    
  printf(" No such owner ID!\n");
  return;
 }
 savew(p);
 printf(" Delete successful !\n");
}
 void Display2()
 {
    
 struct wuye *p;
 p=pHead;
 while(p!=NULL)
 {
    
   printf("ID:%s\n",p->ID);
   printf(" most   after   One   Time   Pay in   fee   Japan   period  %d year %d month \n",p->last_year,p->last_month);
   printf(" Payment amount :%f element \n",p->money);
   printf(" Period of validity of the fee %d Months \n",p->to_time);
   printf("\n\n\n");
   p=p->link;
  }
}
 void myDisplay(struct wuye *p)
{
    
 printf(" The owner ID:%s\n",p->ID);
 printf(" most   after   One   Time   Pay in   fee   Japan   period  %d year %d month \n",p->last_year,p->last_month);
 printf(" Last payment amount %f\n",p->money);
 printf(" Period of validity of the fee %d Months \n",p->to_time);
 }
void Read2()//
{
    
 FILE *fp;
 struct wuye *p;
 fp=fopen("wuye.dat","rb");
 while(1)
{
    
   p=(struct wuye *)malloc(sizeof(struct wuye));
   if(feof(fp))
    break;
   if(fread(p,sizeof(struct wuye),1,fp))
    myAdd4(p);
  }
 fclose(fp);
}

void savew(struct wuye *p)//
{
    
 FILE *fp; fp=fopen("wuye.dat","wb");
 p=pHead;
 while(p!=NULL)
  {
    
   fwrite(p,sizeof(struct wuye),1,fp);
   p=p->link;
  }
 fclose(fp);
}

void mychaozhao()//
{
    
 int year,month;
 struct wuye *k;
 struct yezhu *l;
 k=pHead;
 l=phead;
 printf(" Please enter the current year ");
 scanf("%d",&year);
printf(" Please enter the current month ");
 scanf("%d",&month);
 while(k!=NULL)
  {
    
   if(year>k->last_year)
    {
    
     l=find1(k->ID);

 l->lost=(float)(month+12-k->to_time-k->last_month)*(0.4*l->area);
     if(l->lost>0)
      {
    
       printf(" The owner ID*:%s\n",l->id);
       printf(" Name of the employer *%s\n",l->name);
       printf(" Last payment date %d year %d month \n",k->last_year,k->last_month);
       printf(" The amount owed *%f\n",l->lost);
       printf("\n\n");
      }
    }
   if(year==k->last_year)
    {
    
     l=find1(k->ID);

 l->lost=(float)(month-k->to_time-k->last_month)*(0.4*l->area);
     if(l->lost>0)
      {
    
       printf(" The owner ID:%s\n",l->id);
       printf(" Name of the employer %s\n",l->name);
       printf(" Last payment date %d year %d month \n",k->last_year,k->last_month);
       printf(" Owe   fee   gold   forehead  %f\n",l->lost);
       printf("\n\n");
      }
    }
   k=k->link;
  }
}

int main()//
{
    
 int m;
 //Read1();// No information for the first time  Unavailable 
 //Read2();// No information for the first time  Unavailable 
 do {
    
  m=mainmenu();
  switch(m)
   {
    
    case 1: xinximenu();
     break;
    case 2: tongjimenu();
     break;
    case 3:printf("***************************** Thank you for using. , bye !***********************************\n"); exit(0);
   }
  } while(1);
  return 1;
}

You can pay attention to it, and it will be updated continuously in the future 0.0（ Thank you first ）