C language implements the house management system
- 2020-06-23 01:26:35
- OfStack
This article shares the specific code of C language house management system for your reference. The specific content is as follows
#include<stdio.h>
#include<windows.h>
#include<string.h>
#include<conio.h>
#define N 100
int res = 0;
struct Lodginghouse
{
char Lodginghouse_type[20]; // Apartment type
} Lodginghouse[100];
struct CommonHouse
{
char building_style[20]; // Residential architectural style
} CommonHouse[100];
struct Villa
{
char villa_style[20]; // Villa building materials
} villa[100];
struct House
{
char type[100]; // Housing types
int number; // House number
// int buildtime; // How long has it been established
char sold[100]; // Whether to sell
int price; // Selling price
int area; // Floor area (square meters)
// int postion; // Housing location, such as Beijing 3 ring
// char balcony[20]; // The balcony toward
// int total_floors; // The total number of floors
} house[100];
void main();
void menu();
void input();
void save(int);
void display();
void del();
void add();
void array();
void search();
void search_num();
void search_name();
void yusuan();
void modify();
void start(); /* Define each function */
void start() // Start interface
{
system("cls");// Clear the screen
system("color 1F"); // Set the text color to yellow Background blue
printf("\n\n\n\n\n\n\n\n\n\n\n\n");
printf("\t\t********************************************************************************\n");
printf("\n\n");
printf("\t\t************************ Welcome to use our house sales management system *************************");
printf("\n\n");
printf("\t\t********************************************************************************\n\n\n\n\n");
printf("\t\t\t\t The producer : \n");
printf("\t\t\t\t XXX XXX XXX\n");
printf("\t\t\t\t XXX XXX \n");
printf("\t\t\t\t XXX XX \n");
printf("\t\t\t\t XX\n");
printf("\t\t\t\t Production time : \n");
printf("\t\t\t\t 2018 years 6 month \n");
printf("\t\t\t *** Press any key to enter ***\n");
}
void menu() // Menu interface
{
system("cls");
system("color 1F");
printf("\n\n\n\n\n\n\n\n\n\n\n\n");
printf("\t\t\t\t\t************************\n\n");
printf("\t\t\t\t\t********** The menu **********\n\n");
printf("\t\t\t\t\t************************\n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 1 The input \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 2 According to \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 3 To find the \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 4 delete \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 5 add \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 6 Modify the \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 7 The budget \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 8 The sorting \n\n");
printf(">>>>>>>>>>>>>>>>>>>>>>>>> 9 exit \n\n");
printf(" Note: \n");
printf(" When using the system for the first time, select the input option, and the input option overrides the original information. ");
}
void input() /* Input function */
{
int i,m;
system("cls");
printf(" The number of houses to enter (1--100):\n");
scanf("%d",&m);
for (i = res; i < m + res; i++)
{
printf(" Please enter the house type (apartment) , Ordinary residence, villa) : ");
scanf("%s",&house[i].type);
printf(" Please enter the house number : ");
scanf("%d",&house[i].number);
// printf(" Please enter how long it has been established : ");
// scanf("%d",&house[i].buildtime);
printf(" Please enter whether sold or not (yes / no ): ");
scanf("%s",&house[i].sold);
printf(" Please enter the selling price : ");
scanf("%d",&house[i].price);
printf(" Please enter the floor space : ");
scanf("%d",&house[i].area);
// printf(" Please enter the location of the house (for example 3 Ring type 3 ) : ");
// scanf("%d",&house[i].postion);
// printf(" Please enter the balcony orientation ( Southeast northwest) : ");
// scanf("%s",&house[i].balcony);
// printf(" Please enter the total number of floors : ");
// scanf("%d",&house[i].total_floors);
if(strcmp(house[i].type, " apartment ") == 0)
{
printf(" Please enter the apartment type : ");
scanf("%s",&Lodginghouse[i].Lodginghouse_type);
}
else if(strcmp(house[i].type, " Average house ") == 0)
{
printf(" Ordinary residential building style : ");
scanf("%s",&CommonHouse[i].building_style);
}
else
{
printf(" Please enter the villa building materials : ");
scanf("%s",&villa[i].villa_style);
}
printf("\n");
}
res = i;
printf("\n Is created !\n");
save(m);// Total number of houses preserved m
}
void save(int m) /* Save file function */
{
int i, type;
FILE*fp1, *fp2, *fp3; // The statement fp It's a pointer, it's a pointer to something FILE Object of type
if ((fp1=fopen("Lodginghouse","wb"))==NULL) // Open house list file empty
{
printf (" Open the failure \n");
exit(0);
}
if ((fp2=fopen("Ordinary house","wb"))==NULL) // Open house list file empty
{
printf (" Open the failure \n");
exit(0);
}
if ((fp3=fopen("Villa","wb"))==NULL) // Open house list file empty
{
printf (" Open the failure \n");
exit(0);
}
for (i=0; i<m; i++) /* Output the information of the house in memory to the disk file */
{
if(strcmp(house[i].type, " apartment ") == 0)
{
if (fwrite(&house[i],sizeof(struct House),1,fp1)!=1)// Write data block &em[i] : is the address of the data to be output sizeof(struct clerk) : get 1 The length of a monomer 1 : Number of data items fp : A pointer to the target file
printf(" File read/write error \n");
if (fwrite(&Lodginghouse[i],sizeof(struct Lodginghouse),1,fp1)!=1)
printf(" File read/write error \n");
}
else if(strcmp(house[i].type, " Average house ") == 0)
{
if (fwrite(&house[i],sizeof(struct House),1,fp2)!=1)// Write data block &em[i] : is the address of the data to be output sizeof(struct clerk) : get 1 The length of a monomer 1 : Number of data items fp : A pointer to the target file
printf(" File read/write error \n");
if (fwrite(&CommonHouse[i],sizeof(struct CommonHouse),1,fp2)!=1)
printf(" File read/write error \n");
}
else
{
if (fwrite(&house[i],sizeof(struct House),1,fp3)!=1)// Write data block &em[i] : is the address of the data to be output sizeof(struct clerk) : get 1 The length of a monomer 1 : Number of data items fp : A pointer to the target file
printf(" File read/write error \n");
if (fwrite(&villa[i],sizeof(struct Villa),1,fp3)!=1)
printf(" File read/write error \n");
}
}
fclose(fp1);// The last remaining data in the buffer is output to the disk file, and the file pointer is freed along with the associated buffer
fclose(fp2);
fclose(fp3);
}
int load(int type) /* The import function int type */
{
int k;
FILE*fp;
int i=0;
if(type == 1) // apartment
{
if((fp=fopen("Lodginghouse","rb"))==NULL)
{
printf ("cannot open file\n");
exit(0);
}
while(feof(fp)==0) // Detects end of file character on stream
{
fread(&house[i],sizeof(struct House),1,fp); // read
fread(&Lodginghouse[i],sizeof(struct Lodginghouse),1,fp);
i++;
}
}
else if(type == 2) // Average house
{
if((fp=fopen("Ordinary house","rb"))==NULL)
{
printf ("cannot open file\n");
exit(0);
}
while(feof(fp)==0)
{
fread(&house[i],sizeof(struct House),1,fp); // read
fread(&CommonHouse[i],sizeof(struct CommonHouse),1,fp);
i++;
}
}
else // villa
{
if((fp=fopen("Villa","rb"))==NULL)
{
printf ("cannot open file\n");
exit(0);
}
while(feof(fp)==0)
{
fread(&house[i],sizeof(struct House),1,fp); // read
fread(&villa,sizeof(struct Villa),1,fp);
i++;
}
}
fclose(fp);
return i - 1;// Returns the number of houses of this type
}
void search()/* Query function */
{
int t,button;
system("cls");// Clear the screen
do
{
printf("\n According to the 1 The query \n According to the 2 Back to the main menu \n");
scanf("%d",&t);
if(t>=1&&t<=2)
{
button=1;
break;
}
else
{
button=0;
printf(" Input error ");
}
}
while(button==0);// Go back to the query selection
while(button==1)
{
switch(t)// Select query mode
{
case 1:
printf(" Being queried \n");
search_num();
break;
case 2:
main();
break;
default:
break;
}
}
}
void search_num()// Check by house number
{
int a, k;
int i,t;
int m;
char s[20];
printf(" Please enter the type of house you want to query :\n");
scanf("%s", &s);
if(strcmp(s, " apartment ") == 0)
k=1;
else if(strcmp(s, " Average house ") == 0)
k=2;
else
k=3;
m=load(k);
printf(" Please enter the house number you are looking for :\n");
scanf("%d",&a);
for(i=0; i<m; i++)
if(a==house[i].number)
{
printf(" Housing types House number Whether to sell The price ( yuan ) area ( Square meters ) location ( ring ) The balcony toward The total number of layer ( layer )");
if(k == 1) printf(" Apartment type ");
else if(k == 2) printf(" Residential style ");
else printf(" Villa material ");
printf("\n");
printf("\n %-6s %-6d %-8s %-7d", house[i].type, house[i].number, house[i].sold, house[i].price);
printf(" %-8d ", house[i].area);
if(k == 1) printf(" %s", Lodginghouse[i].Lodginghouse_type);
else if(k == 2) printf(" %s", CommonHouse[i].building_style);
else printf(" %s", villa[i].villa_style);
break;
}
if(i==m)
printf("\n No inquiry was made about the room \n");
printf("\n");
printf(" To return a query function, press 1, Please press to continue to check the housing number 2\n");
scanf("%d",&t);
switch(t)
{
case 1:
search();
break;
case 2:
break;
default:
break;
}
}
void display() /* Browse function */
{
int sold, unsold;
sold = 0; // The number of houses sold
int i, type;
char s[20];
printf(" Please enter the type of house to display :");
scanf("%s", &s);
if(strcmp(s, " apartment ") == 0)
type=1;
else if(strcmp(s, " Average house ") == 0)
type=2;
else
type=3;
int m=load(type);
system("cls");
printf(" Housing types House number Whether to sell The price ( yuan ) area ( Square meters ) location ( ring ) The balcony toward The total number of layer ( layer )");
if(type == 1) printf(" Apartment type ");
else if(type == 2) printf(" Residential style ");
else printf(" Villa material ");
printf("\n");
for(i=0; i<m+res - 1; i++)
{
if(strcmp(house[i].sold, " is ") == 0) sold++;
printf("\n %-6s %-6d %-8s %-7d", house[i].type, house[i].number, house[i].sold, house[i].price);
printf(" %-8d ", house[i].area);
if(type == 1) printf(" %s", Lodginghouse[i].Lodginghouse_type);
else if(type == 2) printf(" %s", CommonHouse[i].building_style);
else printf(" %s", villa[i].villa_style);
}
printf("\n The number of such buildings sold is: %d", sold);
printf("\n The unsold quantity of this kind of building is: %d", m + res - 1 -sold);
}
void add()/* Add function */
{
FILE*fp;
int n;
int type;
int count=0;
int i;
char s[20];
printf(" Please enter the type of house to be added :");
scanf("%s", &s);
if(strcmp(s, " apartment ") == 0)
type=1;
else if(strcmp(s, " Average house ") == 0)
type=2;
else
type=3;
int m=load(type);
printf("\n Original house information :\n");
display();
printf("\n");
printf(" Please enter the number of houses you want to increase :\n");// Determine the number of houses to be added n
scanf("%d",&n);
for (i=m; i<(m+n); i++) // add n Information about a house
{
printf(" Please enter the house type (apartment) , Ordinary residence, villa) : ");
scanf("%s",&house[i].type);
printf(" Please enter the house number : ");
scanf("%d",&house[i].number);
printf(" Please enter whether sold or not (yes / no ): ");
scanf("%s",&house[i].sold);
printf(" Please enter the selling price : ");
scanf("%d",&house[i].price);
printf(" Please enter the floor space : ");
scanf("%d",&house[i].area);
if(type == 1)
{
printf(" Please enter the apartment type : ");
scanf("%s",&Lodginghouse[i].Lodginghouse_type);
}
else if(type == 2)
{
printf(" Ordinary residential building style : ");
scanf("%s",&CommonHouse[i].building_style);
}
else
{
printf(" Please enter the villa building materials : ");
scanf("%s",&villa[i].villa_style);
}
printf("\n");
count=count+1;
printf(" The number of houses has increased :\n");
printf("%d\n",count);
}
save(m + n);
printf("\n Add a success \n");
printf("\n Add all house information after :\n");
display();// Displays the added information
}
void modify() /* Modify the function */
{
int k;
char s[100];
char type[100];
int number;
char sold[100];
int price;
int area;
char Lodginghouse_type[100];
char building_style[20];
char villa_style[20];
int b,c,i,n,t,button;
printf(" Please enter the type of house you want to modify :");
scanf("%s", &s);
if(strcmp(s, " apartment ") == 0)
k=1;
else if(strcmp(s, " Average house ") == 0)
k=2;
else
k=3;
int m=load(k);
system("cls");
printf("\n Original house information :\n");
display();
printf("\n");
printf(" Please enter the number of the house to be modified :\n");
scanf("%d",&number);
for(button=1,i=0; button&&i<m; i++)
{
if(house[i].number == number)
{
printf("\n The house was originally recorded as :\n");
printf(" Housing types House number Whether to sell The price ( yuan ) area ( Square meters ) ");
if(k == 1) printf(" Apartment type ");
else if(k == 2) printf(" Residential style ");
else printf(" Villa material ");
printf("\n %-6s %-6d %-8s %-7d", house[i].type, house[i].number, house[i].sold, house[i].price);
printf(" %-8d ", house[i].area);
if(k == 1) printf(" %s", Lodginghouse[i].Lodginghouse_type);
else if(k == 2) printf(" %s", CommonHouse[i].building_style);
else printf(" %s", villa[i].villa_style);
printf("\n determine According to the 1 ; Press if not modified 0\n");
scanf("%d",&n);
if(n==1)
{
printf("\n Options that need to be modified \n 1. Housing types 2. House number 4. Whether to sell 5. The price 6. area ");
if(k==1) printf("10. Apartment type ");
else if(k == 2) printf("10. Residential style ");
else printf("10. Villa material ");
printf("11. Return to the top \n");
printf(" Please select the serial number 1-11:\n");
scanf("%d",&c);
if(c>11||c<1)
printf("\n The wrong choice , Please reselect !\n");
}
button=0;
}
}
if(button==1)
printf("\n No trace of the house was found \n");
do
{
switch(c) /* Because when you find the first i When building a ,for After the statement i Since the added 1, So the following should assign the modified information to the first i-1 a */
{
case 1:
printf(" House type changed to : ");
scanf("%s",&type);
strcpy(house[i - 1].type,type);
break;
case 2:
printf(" Change the building number to : ");
scanf("%d",&number);
house[i-1].number=number;
break;
case 4:
printf(" Whether the house was sold to change : ");
scanf("%s",&sold);
strcpy(house[i-1].sold, sold);
break;
case 5:
printf(" House price changed to : ");
scanf("%d",&price);
house[i-1].price=price;
break;
case 6:
printf(" The size of the house changed to: ");
scanf("%d", &area);
house[i-1].area=area;
break;
case 10:
if(k == 1)
{
printf(" Apartment type changed to: ");
scanf("%s", &Lodginghouse_type);
strcpy(Lodginghouse[i-1].Lodginghouse_type, Lodginghouse_type);
break;
}
else if(k == 2)
{
printf(" The style of the house is changed to: ");
scanf("%s", &building_style);
strcpy(CommonHouse[i-1].building_style, building_style);
break;
}
else
{
printf(" The building materials of the villa are changed to: ");
scanf("%s", &villa_style);
strcpy(villa[i-1].villa_style, villa_style);
break;
}
break;
case 11:
modify();
break;
}
printf("\n");
printf("\n\n Sure to modify Please click 1 ; To modify the Please click 2: \n");
scanf("%d",&b);
}while(b==2);
printf("\n All house information after modification :\n");
printf("\n");
save(m);
display();
printf("\n According to the 1 Continue to modify , Please press for no further modifications 0\n");
scanf("%d",&t);
switch(t)
{
case 1:
modify();
break;
case 0:
break;
default :
break;
}
}
void del() /* Delete function */
{
int type;
char s[100];
int i,j,n,t,button;
int number;
printf(" Please enter the type of house to be deleted: ");
scanf("%s", &s);
if(strcmp(s, " apartment ") == 0)
type=1;
else if(strcmp(s, " Average house ") == 0)
type=2;
else
type=3;
int m=load(type);
printf("\n Original house information :\n");
display(); // Displays house information before deletion
printf("\n");
printf(" Please enter the number of the house you want to delete :\n");
scanf("%d",&number);
for(button=1,i=0; button&&i<m; i++) // In the main function button==1 The function can only be called
{
if(house[i].number == number)// Locate an employee by name And pull out its data
{
printf("\n The house was originally recorded as :\n");// Displays information about the selected employee
printf(" Housing types House number Whether to sell The price ( yuan ) area ( Square meters ) ");
if(type == 1) printf(" Apartment type ");
else if(type == 2) printf(" Residential style ");
else printf(" Villa material ");
printf("\n %-6s %-6d %-8d %-8s %-7d", house[i].type, house[i].number, house[i].sold, house[i].price);
printf(" %-8d ", house[i].area);
if(type == 1) printf(" %s", Lodginghouse[i].Lodginghouse_type);
else if(type == 2) printf(" %s", CommonHouse[i].building_style);
else printf(" %s", villa[i].villa_style);
printf("\n Sure to delete Please click 1, Click not to delete 0\n");
scanf("%d",&n);
if(n==1)
{
for(j=i; j<m-1; j++) // From the first i A start After the 1 The values of the item are assigned before 1 The terms correspond to each other Completion of the first i Delete the item
{
strcpy(house[j].type,house[j+1].type);
house[j].number=house[j+1].number;
// house[j].buildtime=house[j+1].buildtime;
strcpy(house[j].sold, house[j+1].sold);
house[j].price=house[j+1].price;
house[j].area=house[j+1].area;
//house[j].postion=house[j+1].postion;
// strcpy(house[j].balcony, house[j+1].balcony);
//house[j].total_floors=house[j+1].total_floors;
if(type == 1) strcpy(Lodginghouse[j].Lodginghouse_type, Lodginghouse[j+1].Lodginghouse_type);
else if(type == 2) strcpy(CommonHouse[j].building_style, CommonHouse[j+1].building_style);
else strcpy(villa[j].villa_style, villa[j+1].villa_style);
}
button=0;
}
}
}
if(!button)//button==0 Indicates that the deletion is complete
m=m-1;// The total number of homes is down 1 people
else
printf("\n No such house is available !\n");
printf("\n All house information deleted :\n");
save(m); // Call save function
display(); // Call browse function
printf("\n Press to continue deletion 1, Please press no longer delete 0\n");
scanf("%d",&t);
switch(t)
{
case 1:
del();
break;
case 0:
break;
default :
break;
}
}
void yusuan()
{
int i;
int type;
char s[100];
int ayusuan = 0; // On behalf of the budget
printf(" Please enter the type of housing to be budgeted for: ");
scanf("%s", &s);
if(strcmp(s, " apartment ") == 0)
type=1;
else if(strcmp(s, " Average house ") == 0)
type=2;
else
type=3;
int m=load(type);
for (i=0; i<m; i++)
{
ayusuan += house[i].price;
}
if(type == 1)
printf(" The budget of all apartments sold is as follows: ");
else if(type == 2)
printf(" The budget for selling all ordinary houses is: ");
else
printf(" The budget of all the villas sold is: ");
printf("%d\n", ayusuan);
}
void sort_realw()
{
int i,j,k,m,l;
char s;
printf(" Please enter the type of house you want to sort: ");
scanf("%s",&s);
if(strcmp(s, " apartment ") == 0)
l=1;
else if(strcmp(s, " Average house ") == 0)
l=2;
else
l=3;
m=load(k);
struct House replace;
struct House *p;
p=house;
for(i=0;i<m-1;i++)
{
k=i;
for(j=i+1;j<m;j++)
{
if(p[k].price<p[j].price)
k=j;
replace=house[k];
house[k]=house[i];
house[i]=replace;
}
}
for(i=0;i<m;i++)
{
printf(" Your room number, area The price type Sales status \n");
printf("\n %-6d %-6d %-8d %-8s %-8s ",house[i].number,house[i].area,house[i].price,house[i].type,house[i].sold);
}
}
void main()// The main function
{
int n, m, button;
char a;
start();
getch();
menu();
do
{
printf(" Feature selection (1 - 9 ):\n");
scanf("%d",&n);
if(n>=1&&n<=8)
{
button=1;
break;
}
else if(n == 9)
{
exit(0);
}
else
{
button=0;
printf(" You typed it incorrectly , Please reselect !");
}
}
while(button==0);
while(button==1)
{
switch(n)
{
case 1:
input();
break;
case 2:
display();
break;
case 3:
search();
break;
case 4:
del();
break;
case 5:
add();
break;
case 6:
modify();
break;
case 7:
yusuan();
break;
case 8:
yusuan();
break;
case 9:
exit(0);
break;
default :
break;
}
getchar();
printf("\n");
printf(" Press any key to continue \n");
getch();
system("cls"); /* Clear the screen */
menu(); /* Call menu function */
printf(" Feature selection (1--9):\n");
scanf("%d",&n);
printf("\n");
}
}Note: When calculating the total number of houses, 1 pay attention to initializing and updating the global variable value
For more information, please pay attention to the topic management System Development.