library system.c

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
//global variables
int role,i = 0;
char full_name[50],student_no[50],emp_no[50];
int rb1=0,rb2=0,rb3=0,rb4=0,rb5=0;//reserve books
int bb1=0,bb2=0,bb3=0,bb4=0,bb5=0;//borrow books
char returnBooks[100];

void menu();
void borrow();
void reserve();
void review();
int main(){
    printf("LIBRAY SYSTEM MANAGEMENT ...\n");
    printf("Are you ? \n[1] student \n[2] employer\n ~");
    scanf("%d",&role);
    fflush(stdin);
    if(role == 1){
        printf("Enter your name ~ ");
        gets(full_name);
        printf("Enter your student number ~ ");
        gets(student_no);
    }else if(role == 2){
        printf("Enter you id number ~");
        gets(emp_no);
    }else {
        getch();
        system("cls");
        return 0;
    }
    menu();
    return 0;
}
void reserve(){
    int choice;
    while(1){
         system("cls");
        printf("AVAILABLE BOOKS\n--------------------\n");
        printf("Book#               Name\n");
        if(rb1 != 1) printf("1                mathematics\n");
        if(rb2 != 2) printf("2                Arts\n");
        if(rb3 != 3) printf("3                Science\n");
        if(rb4 != 4) printf("4                English\n");
        if(rb5 != 5) printf("5                MAPEH\n");
        if(rb1 == 1&&rb2 == 2&&rb3 == 3&&rb4 == 4&&rb5 == 5){
             printf("NO AVAILABLE BOOKS TO RESERVE!");
             getch();
             menu();
        }
        printf("Enter the Book# you want to reserve, enter [9] to back to menu~ ");
        scanf("%d",&choice);
        fflush(stdin);
        if(choice == 9)menu();
        if(choice == 1) {
            rb1 = 1;
            continue;
        }
        if(choice == 2){
            rb2 = 2;
            continue;
        }
        if(choice == 3){
            rb3 = 3;
            continue;
        }
        if(choice == 4){
            rb4 = 4;
            continue;
        }
        if(choice == 5){
             rb5 = 5;
             continue;
        }
        else printf("not available !\n");
    }
}
void review(){
    system("cls");
    if(role == 1){
        printf("Type : Student\nName : %s\nStudent # : %s\n\n",full_name,student_no);
    }else {
        printf("Type : Employer\nId# : %s\n\n",emp_no);
    }
     printf("Reserved books \n");
        if(rb1 != 0){
            printf("-book 1 mathematics\n");
        }
        if(rb2 != 0){
            printf("-book 2 Arts\n");
        }
        if(rb3 != 0){
            printf("-book 3 Science\n");
        }
        if(rb4 != 0){
            printf("-book 4 English\n");
        }
        if(rb5 != 0){
            printf("-book 5 Mapeh\n");
        }
        printf("\nBorrowed  books \n");
        if(bb1 != 0){
            printf("-book 1 ethics\n");
        }
        if(bb2 != 0){
            printf("-book 2 Rizal\n");
        }
        if(bb3 != 0){
            printf("-book 3 Programming\n");
        }
        if(bb4 != 0){
            printf("-book 4 Arts\n");
        }
        if(bb5 != 0){
            printf("-book 5 Computing\n");
        }
        printf("\nReturned Books \n%s",returnBooks);
    getch();
    menu();
}
void borrow(){
     int choice;
    while(1){
         system("cls");
        printf("AVAILABLE BOOKS\n--------------------\n");
        printf("Book#               Name\n");
        if(bb1 != 1) printf("1                Ethics\n");
        if(bb2 != 2) printf("2                Rizal\n");
        if(bb3 != 3) printf("3                Programming\n");
        if(bb4 != 4) printf("4                Arts\n");
        if(bb5 != 5) printf("5                Computing\n");
        if(bb1 == 1&&bb2 == 2&&bb3 == 3&&bb4 == 4&&bb5 == 5){
             printf("NO AVAILABLE BOOKS TO BORROW!");
             getch();
             menu();
        }
        printf("Enter the Book# you want to borrow, enter [9] to back to menu~ ");
        scanf("%d",&choice);
        fflush(stdin);
        if(choice == 9)menu();
        if(choice == 1) {
            bb1 = 1;
            continue;
        }
        if(choice == 2){
            bb2 = 2;
            continue;
        }
        if(choice == 3){
            bb3 = 3;
            continue;
        }
        if(choice == 4){
            bb4 = 4;
            continue;
        }
        if(choice == 5){
            bb5 = 5;
            continue;
        }
        else printf("not available !\n");
        getch();
    }

}

void rBooks(){
    int choice;
    while(1){
         system("cls");
        printf("RETURN BOOKS\n--------------------\n");
        printf("Book#               Name\n");
        if(bb1 == 1) printf("1                Ethics\n");
        if(bb2 == 2) printf("2                Rizal\n");
        if(bb3 == 3) printf("3                Programming\n");
        if(bb4 == 4) printf("4                Arts\n");
        if(bb5 == 5) printf("5                Computing\n");
        if(bb1 != 1&&bb2 != 2&&bb3 != 3&&bb4 != 4&&bb5 != 5){
             printf("NO AVAILABLE BOOKS TO RETURN!");
             getch();
             menu();
        }
        printf("Enter the Book# you want to Return, enter [9] to back to menu~ ");
        scanf("%d",&choice);
        fflush(stdin);
        if(choice == 9)menu();
        if(choice == 1) bb1 = 0;
        if(choice == 2) bb2 = 0;
        if(choice == 3) bb3 = 0;
        if(choice == 4) bb4 = 0;
        if(choice == 5) bb5 = 0;
        else printf("not available !\n");
        getch();
    }
}
void menu(){
    int choose;
    char ch;
    system("cls");
    printf("-----MENU----\n");

    printf("Options ~\n[1] reservation book \n[2] borrow book\n[3] return book \n[4] Review Books\n[5] Exit\n~ ");
    scanf("%d",&choose);
    fflush(stdin);
    if(choose == 1){
        reserve();
    }if(choose == 2){
        borrow();
    }else if(choose == 3){
        rBooks();
    }else if(choose == 4)review();
    else if(choose == 5) {
            printf("end session ! Thank you for using library system!");
        getch();
        system("cls");
        exit(0);
    }

}