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#include <stdio.h>
#include <string.h>
struct bookstore{
char code[7];
char title[30];
int quantity;
double price;
}book[100];
void inputCode(int i){
printf("Enter code: ");
fflush(stdin);
gets(book[i].code);
for(int j=1;j<i;j++){
if(strcmp(book[i].code,book[j].code)==0){
printf("The code %s already exists, please reenter!\n",book[i].code);
inputCode(i);
}
}
}
void inputBook(int &n){
printf("Enter number of books: ");
scanf("%d",&n);
for(int i=1;i<=n;i++){
printf("Book %d:\n",i);
inputCode(i);
printf("Enter title: ");
fflush(stdin);
gets(book[i].title);
printf("Enter quantity: ");
scanf("%d",&book[i].quantity);
printf("Enter price: ");
scanf("%lf",&book[i].price);
}
}
void displayBook(int n){
double total=0;
printf("Code Title Quantity Price Value\n");
for(int i=1;i<=n;i++){
printf("%s %9s %9d %9.1lf %10.1lf\n",book[i].code,book[i].title,book[i].quantity,book[i].price,book[i].price*book[i].quantity);
total+=book[i].quantity*book[i].price;
}
printf("\t\t\tTotal value: %.1lf\n",total);
}
void swap(bookstore &a, bookstore &b){
bookstore temp;
temp=a;
a=b;
b=temp;
}
void sortBook(int n){
for(int i=1;i<=n;i++){
for(int j=n;j>i;j--)
if(strcmp(book[j].code,book[j-1].code)<0)
swap(book[j],book[j-1]);
}
}
int main(){
int check=-1,n;
do{
printf("Select options:");
printf("\n1. Enter the list of books");
printf("\n2. Display the list of books");
printf("\n3. Sort the list of books by code");
printf("\n0. Exit");
printf("\nYour selection (0 -> 3): ");
scanf("%d",&check);
switch(check){
case 1: inputBook(n);break;
case 2: displayBook(n);break;
case 3: sortBook(n);break;
case 0: return 0;
}
}while(check!=0);
}