Library Management System.c

#include<windows.h>
#include<stdio.h>
#include<conio.h>
#include <stdlib.h>
#include<string.h>
#include<ctype.h>
#include<dos.h>
#include<time.h>
#define RETURNTIME 15


char catagories[][15]={"Computer","Electronics","Electrical","Civil","Mechnnical","Architecture"};
void returnfunc(void);
void mainmenu(void);
void addbooks(void);
void deletebooks(void);
void editbooks(void);
void searchbooks(void);
void issuebooks(void);
void viewbooks(void);
int  getdata();
int  checkid(int);
int t(void);
void issuerecord();

FILE *fp,*ft,*fs;
COORD coord = {0, 0};
int s;
char findbook;
void gotoxy (int x, int y)
{
    coord.X = x; coord.Y = y;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}
struct meroDate
{
    int mm,dd,yy;
};
struct books
{
    int id;
    char stname[20];
    char name[20];
    char Author[20];
    int quantity;
    float Price;
    int count;
    int rackno;
    char *cat;
    struct meroDate issued;
    struct meroDate duedate;
};
struct books a;
int main()
{
    mainmenu();
    getch();
    return 0;

}
void mainmenu()
{
    system("cls");
    int i;
    printf("\n\n\n\t\t\t\t\tLIBRARY MANAGEMENT SYSTEM\n\n\n\n\n\t\t\t\t\t1. Add Books \n\n  ");
    printf("\t\t\t\t\t2. Delete books\n\n");
    printf("\t\t\t\t\t3. Search Books\n\n");
    printf("\t\t\t\t\t4. Issue Books\n\n");
    printf("\t\t\t\t\t5. View Book list\n\n");
    printf("\t\t\t\t\t6. Edit Book's Record\n\n");
    printf("\t\t\t\t\t7. Close Application\n\n");
    printf("\t\t\t\t\t\tEnter your choice:");
    switch(getch())
    {
        case '1': addbooks();
        break;
        case '2': deletebooks();
        break;
        case '3': searchbooks();
        break;
        case '4': issuebooks();
        break;
        case '5': viewbooks();
        break;
        case '6': editbooks();
        break;
        case '7':{
                    system("cls");
                    printf("Exiting in 3 second...........>");
                    Sleep(3000);
                    exit(0);
                 }
        default:{
                    printf("Wrong Entry!!Please re-entered correct option");
                    if(getch())
                    mainmenu();
                }
    }
}
void addbooks(void)    //funtion that add books
{
    system("cls");
    int i;
    printf("\n\n\n\n\t\t\t\tSELECT CATEGOIES\n");
    printf("\t\t1. Computer\n");
    printf("\t\t2. Electronics\n");
    printf("\t\t3. Electrical\n");
    printf("\t\t4. Civil\n");
    printf("\t\t5. Mechanical\n");
    printf("\t\t6. Architecture\n");
    printf("\t\t7. Back to main menu\n");
    printf("\n\t\tEnter your choice:");
    scanf("%d",&s);
    if(s==7)
        mainmenu();
    system("cls");
    fp=fopen("File.dat","ab+");
    if(getdata()==1)
    {
        a.cat=catagories[s-1];
        fseek(fp,0,SEEK_END);
        fwrite(&a,sizeof(a),1,fp);
        fclose(fp);
        gotoxy(21,14);
        printf("The record is sucessfully saved");
        gotoxy(21,15);
        printf("Save any more?(Y / N):");
        if(getch()=='n')
        mainmenu();
        else
        system("cls");
        addbooks();
    }
}
void deletebooks()    //function that delete items from file fp
{
    system("cls");
    int d;
    char another='y';
    while(another=='y')  //infinite loop
    {
        system("cls");
        gotoxy(10,5);
        printf("Enter the Book ID to delete:");
        scanf("%d",&d);
        fp=fopen("File.dat","rb+");
        rewind(fp);
        while(fread(&a,sizeof(a),1,fp)==1)
        {
            if(a.id==d)
            {
                gotoxy(10,7);
                printf("The book record is available");
                gotoxy(10,8);
                printf("Book name is %s",a.name);
                gotoxy(10,9);
                printf("Rack No. is %d",a.rackno);
                findbook='t';
            }
        }
        if(findbook!='t')
        {
            gotoxy(10,10);
            printf("No record is found modify the search");
            if(getch())
            mainmenu();
        }
        if(findbook=='t' )
        {
            gotoxy(10,9);
            printf("Do you want to delete it?(Y/N):");
            if(getch()=='y')
            {
                ft=fopen("test.dat","wb+");  //temporary file for delete
                rewind(fp);
                while(fread(&a,sizeof(a),1,fp)==1)
                {
                    if(a.id!=d)
                    {
                        fseek(ft,0,SEEK_CUR);
                        fwrite(&a,sizeof(a),1,ft); //write all in tempory file except that
                    }                              //we want to delete
                }
                fclose(ft);
                fclose(fp);
                remove("File.dat");
                rename("test.dat","File.dat"); //copy all item from temporary file to fp except that
                fp=fopen("File.dat","rb+");    //we want to delete
                if(findbook=='t')
                {
                    gotoxy(10,10);
                    printf("The record is sucessfully deleted");
                    gotoxy(10,11);
                    printf("Delete another record?(Y/N)");
                }
            }
            else
                mainmenu();
            fflush(stdin);
            another=getch();
        }
    }
    gotoxy(10,15);
    mainmenu();
}
void searchbooks()
{
    system("cls");
    int d;
    printf("*****************************Search Books*********************************");
    gotoxy(20,10);
    printf("                1. Search By ID");
    gotoxy(20,14);
    printf("                2. Search By Name");
    gotoxy( 15,20);
    printf("Enter Your Choice");
    fp=fopen("File.dat","rb+"); //open file for reading propose
    rewind(fp);   //move pointer at the begining of file
    switch(getch())
    {
        case '1':
                {
                    system("cls");
                    gotoxy(25,4);
                    printf("****Search Books By Id****");
                    gotoxy(20,5);
                    printf("Enter the book id:");
                    scanf("%d",&d);
                    gotoxy(20,7);
                    printf("Searching........");
                    while(fread(&a,sizeof(a),1,fp)==1)
                    {
                    if(a.id==d)
                    {
                    Sleep(2);
                    gotoxy(20,7);
                    printf("The Book is available");
                    gotoxy(20,9);
                    printf("  ID:%d",a.id);
                    gotoxy(20,10);
                    printf("  Name:%s",a.name);
                    gotoxy(20,11);
                    printf("  Author:%s ",a.Author);
                    gotoxy(20,12);
                    printf("  Qantity:%d ",a.quantity);
                    gotoxy(20,13);
                    printf("  Price:Rs.%.2f",a.Price);
                    gotoxy(20,14);
                    printf("  Rack No:%d ",a.rackno);
                    findbook='t';
                    }
                    }
                    if(findbook!='t')  //checks whether conditiion enters inside loop or not
                    {
                    gotoxy(22,9);printf("\aNo Record Found");
                    }
                    gotoxy(20,17);
                    printf("Try another search?(Y/N)");
                    if(getch()=='y')
                    searchbooks();
                    else
                    mainmenu();
                    break;
                }
        case '2':
                {
                    char s[15];
                    system("cls");
                    gotoxy(25,4);
                    printf("****Search Books By Name****");
                    gotoxy(20,5);
                    printf("Enter Book Name:");
                    scanf("%s",s);
                    int d=0;
                    while(fread(&a,sizeof(a),1,fp)==1)
                    {
                        if(strcmp(a.name,(s))==0) //checks whether a.name is equal to s or not
                        {
                            gotoxy(20,7);
                            printf("The Book is available");
                            gotoxy(20,9);
                            printf("   ID:%d",a.id);
                            gotoxy(20,10);
                            printf("   Name:%s",a.name);
                            gotoxy(20,11);
                            printf("   Author:%s",a.Author);
                            gotoxy(20,12);
                            printf("   Qantity:%d",a.quantity);
                            gotoxy(20,13);
                            printf("   Price:Rs.%.2f",a.Price);
                            gotoxy(20,14);
                            printf("   Rack No:%d ",a.rackno);
                            d++;
                        }
                    }
                    if(d==0)
                    {
                        gotoxy(20,8);
                        gotoxy(22,9);printf("\aNo Record Found");
                    }
                    gotoxy(20,17);
                    printf("Try another search?(Y/N)");
                    if(getch()=='y')
                        searchbooks();
                    else
                        mainmenu();
                    break;
                }
        default :
                    getch();
                    searchbooks();
    }
    fclose(fp);
}
void issuebooks(void)  //function that issue books from library
{
    int t;
    system("cls");
    printf("********************************ISSUE SECTION**************************");
    gotoxy(10,5);
    printf("                      1. Issue a Book");
    gotoxy(10,7);
    printf("                      2. View Issued Book");
    gotoxy(10,9);
    printf("                      3. Search Issued Book");
    gotoxy(10,11);
    printf("                      4. Remove Issued Book");
    gotoxy(10,14);
    printf("Enter a Choice:");
    switch(getch())
    {
    case '1':  //issue book
            {
                system("cls");
                int c=0;
                char another='y';
                while(another=='y')
                {
                    system("cls");
                    gotoxy(15,4);
                    printf("***Issue Book section***");
                    gotoxy(10,6);
                    printf("Enter the Book Id:");
                    scanf("%d",&t);
                    fp=fopen("File.dat","rb");
                    fs=fopen("Issue.dat","ab+");
                    if(checkid(t)==0) //issues those which are present in library
                    {
                        gotoxy(10,8);
                        printf("The book record is available");
                        gotoxy(10,10);
                        printf("The name of book is %s",a.name);
                        gotoxy(10,11);
                        printf("Enter student name:");
                        scanf("%s",a.stname);
                        a.duedate.dd=a.issued.dd+RETURNTIME;   //for return date
                        a.duedate.mm=a.issued.mm;
                        a.duedate.yy=a.issued.yy;
                        if(a.duedate.dd>30)
                        {
                            a.duedate.mm+=a.duedate.dd/30;
                            a.duedate.dd-=30;
                        }
                        if(a.duedate.mm>12)
                        {
                            a.duedate.yy+=a.duedate.mm/12;
                            a.duedate.mm-=12;
                        }
                        fseek(fs,sizeof(a),SEEK_END);
                        fwrite(&a,sizeof(a),1,fs);
                        fclose(fs);
                        c=1;
                    }
                    if(c==0)
                    {
                        gotoxy(10,11);
                        printf("No record found");
                    }
                    gotoxy(10,15);
                    printf("Issue any more(Y/N):");
                    fflush(stdin);
                    another=getche();
                    fclose(fp);
                }
                break;
            }
    case '2':  //show issued book list
            {
                system("cls");
                int j=4;
                printf("*******************************Issued book list*******************************\n");
                gotoxy(2,2);
                printf("STUDENT NAME    CATEGORY    ID    BOOK NAME    ISSUED DATE    RETURN DATE");
                fs=fopen("Issue.dat","rb");
                while(fread(&a,sizeof(a),1,fs)==1)
                {
                    gotoxy(2,j);
                    printf("%s",a.stname);
                    gotoxy(18,j);
                    printf("%s",a.cat);
                    gotoxy(30,j);
                    printf("%d",a.id);
                    gotoxy(36,j);
                    printf("%s",a.name);
                    gotoxy(51,j);
                    printf("%d-%d-%d",a.issued.dd,a.issued.mm,a.issued.yy );
                    gotoxy(65,j);
                    printf("%d-%d-%d",a.duedate.dd,a.duedate.mm,a.duedate.yy);
                    gotoxy(50,25);
                    j++;
                }
                fclose(fs);
                gotoxy(1,25);
                returnfunc();
            }
            break;
    case '3':   //search issued books by id
            {
                system("cls");
                gotoxy(10,6);
                printf("Enter Book ID:");
                int p,c=0;
                char another='y';
                while(another=='y')
                {
                    scanf("%d",&p);
                    fs=fopen("Issue.dat","rb");
                    while(fread(&a,sizeof(a),1,fs)==1)
                    {
                        if(a.id==p)
                        {
                            issuerecord();
                            gotoxy(10,12);
                            printf("Press any key.......");
                            getch();
                            issuerecord();
                            c=1;
                        }

                    }
                    fflush(stdin);
                    fclose(fs);
                    if(c==0)
                    {
                        gotoxy(10,8);
                        printf("No Record Found");
                    }
                    gotoxy(10,13);
                    printf("Try Another Search?(Y/N)");
                    another=getch();
                }
            }
            break;
    case '4':  //remove issued books from list
            {
                system("cls");
                int b;
                FILE *fg;  //declaration of temporary file for delete
                char another='y';
                while(another=='y')
                {
                    gotoxy(10,5);
                    printf("Enter book id to remove:");
                    scanf("%d",&b);
                    fs=fopen("Issue.dat","rb+");
                    while(fread(&a,sizeof(a),1,fs)==1)
                    {
                        if(a.id==b)
                        {
                            issuerecord();
                            findbook='t';
                        }
                        if(findbook=='t')
                        {
                        gotoxy(10,12);
                        printf("Do You Want to Remove it?(Y/N)");
                        if(getch()=='y')
                        {
                            fg=fopen("record.dat","wb+");
                            rewind(fs);
                            while(fread(&a,sizeof(a),1,fs)==1)
                            {
                                if(a.id!=b)
                                {
                                    fseek(fs,0,SEEK_CUR);
                                    fwrite(&a,sizeof(a),1,fg);
                                }
                            }
                            fclose(fs);
                            fclose(fg);
                            remove("Issue.dat");
                            rename("record.dat","Issue.dat");
                            gotoxy(10,14);
                            printf("The issued book is removed from list");

                        }

                        }
                        if(findbook!='t')
                        {
                            gotoxy(10,15);
                            printf("No Record Found");
                        }
                    }
                    gotoxy(10,16);
                    printf("Delete any more?(Y/N)");
                    another=getch();
                }
            }
    default:
                gotoxy(10,18);
                printf("\aWrong Entry!!");
                getch();
                issuebooks();
                break;
    }
    gotoxy(1,30);
    returnfunc();
}
void viewbooks(void)  //show the list of book persists in library
{
    int i=0,j;
    system("cls");
    gotoxy(1,1);
    printf("*********************************Book List*****************************");
    gotoxy(2,2);
    printf(" CATEGORY     ID    BOOK NAME     AUTHOR       QTY     PRICE     RackNo ");
    j=4;
    fp=fopen("File.dat","rb");
    while(fread(&a,sizeof(a),1,fp)==1)
    {
        gotoxy(3,j);
        printf("%s",a.cat);
        gotoxy(16,j);
        printf("%d",a.id);
        gotoxy(22,j);
        printf("%s",a.name);
        gotoxy(36,j);
        printf("%s",a.Author);
        gotoxy(50,j);
        printf("%d",a.quantity);
        gotoxy(57,j);
        printf("%.2f",a.Price);
        gotoxy(69,j);
        printf("%d",a.rackno);
        printf("\n\n");
        j++;
        i=i+a.quantity;
    }
    gotoxy(3,25);
    printf("Total Books =%d",i);
    fclose(fp);
    gotoxy(35,25);
    returnfunc();
}
void editbooks(void)  //edit information about book
{
    system("cls");
    int c=0;
    int d,e;
    gotoxy(20,4);
    printf("****Edit Books Section****");
    char another='y';
    while(another=='y')
    {
        system("cls");
        gotoxy(15,6);
        printf("Enter Book Id to be edited:");
        scanf("%d",&d);
        fp=fopen("File.dat","rb+");
        while(fread(&a,sizeof(a),1,fp)==1)
        {
            if(checkid(d)==0)
            {
                gotoxy(15,7);
                printf("The book is availble");
                gotoxy(15,8);
                printf("The Book ID:%d",a.id);
                gotoxy(15,9);
                printf("Enter new name:");scanf("%s",a.name);
                gotoxy(15,10);
                printf("Enter new Author:");scanf("%s",a.Author);
                gotoxy(15,11);
                printf("Enter new quantity:");scanf("%d",&a.quantity);
                gotoxy(15,12);
                printf("Enter new price:");scanf("%f",&a.Price);
                gotoxy(15,13);
                printf("Enter new rackno:");scanf("%d",&a.rackno);
                gotoxy(15,14);
                printf("The record is modified");
                fseek(fp,ftell(fp)-sizeof(a),0);
                fwrite(&a,sizeof(a),1,fp);
                fclose(fp);
                c=1;
            }
            if(c==0)
            {
                gotoxy(15,9);
                printf("No record found");
            }
        }
        gotoxy(15,16);
        printf("Modify another Record?(Y/N)");
        fflush(stdin);
        another=getch() ;
    }
    returnfunc();
}
void returnfunc(void)
{
    {
        printf(" Press ENTER to return to main menu");
    }
    a:
    if(getch()==13) //allow only use of enter
    mainmenu();
    else
    goto a;
}
int getdata()
{
    int t;
    printf("\n\t\t\t\tEnter the Information Below\n");
    printf("\n\n\t\t  Category:");
    printf("%s",catagories[s-1]);
    printf("\n\t\t  Book ID:\t");
    scanf("%d",&t);
    if(checkid(t) == 0)
    {
        printf("\n\t\tThe book id already exists");
        getch();
        mainmenu();
    //return 0;
    }
    a.id=t;
    gotoxy(21,7);
    printf("Book Name:");gotoxy(33,7);
    scanf("%s",a.name);
    gotoxy(21,8);
    printf("Author:");gotoxy(30,8);
    scanf("%s",a.Author);
    gotoxy(21,9);
    printf("Quantity:");gotoxy(31,9);
    scanf("%d",&a.quantity);
    gotoxy(21,10);
    printf("Price:");gotoxy(28,10);
    scanf("%f",&a.Price);
    gotoxy(21,11);
    printf("Rack No:");gotoxy(30,11);
    scanf("%d",&a.rackno);
    return 1;
}
int checkid(int t)  //check whether the book is exist in library or not
{
    rewind(fp);
    while(fread(&a,sizeof(a),1,fp)==1)
        if(a.id==t)
            return 0;  //returns 0 if book exits
    return 1; //return 1 if it not
}
int t(void) //for time
{
    time_t t;
    time(&t);
    printf("Date and time:%s\n",ctime(&t));

    return 0 ;
}
void issuerecord()  //display issued book's information
{
    system("cls");
    gotoxy(10,8);
    printf("The Book has taken by Mr. %s",a.stname);
}