5a_c.c

/*Ques 5. Using files and structures implement a program for inventory control with the following provisions:
(a) Addition of item
(b) Deletion of item
(c) Find and replace and item
*/

# include <stdio.h>  
# include <stdlib.h>
# include <string.h>
# include <stdbool.h>

static int counter = -1;

typedef struct
{
	char name[50];
	char catergory;
	int sku;
	float cp; 
	float mrp;
	float discount;
	bool persishable;
}item_details;

int ask(item_details** list);
void print(item_details** list, int n);
void printItem(item_details** list);
void add(item_details* temp);
void del(item_details** list, int n);
void append(item_details** list, int n);

int main(int argc, char const *argv[]){

	FILE* bin = fopen("dump.txt", "r+");

	item_details** items = malloc(sizeof(item_details*));

	// if (bin != NULL)
	// {
	// 	while (fread(items + counter+ 1, sizeof(item_details), 1, bin) != feof(bin))
	// 	{
	// 		counter++;
	// 		items = (item_details*)realloc(items, (counter+1)*sizeof(item_details));
	// 	}
	// }

	printf("Enter 0 to exit\n");

	while (ask(items) != 0);

	FILE* file = fopen("store.csv", "w");
	fprintf(file, "Serial No.,SKU,Catergory,Name,Cost Price,MRP,Discount,Persishable\n");
	// for (int i = 0; i <= counter; ++i)
	// {
	// 	fprintf(file, "%d,%d,%c,%s,%f,%f,%f,", i+1, (items+i)->sku, (items+i)->catergory, (items+i)->name, (items+i)->cp, (items+i)->mrp, (items+i)->discount);
	// 	if ((items+i)->persishable)
	// 	{
	// 		fprintf(file, "%s", "yes\n");
	// 	}
	// 	else{
	// 		fprintf(file, "%s", "no\n");
	// 	}
	// }

	// for (int i = 0; i <=counter ; ++i)
	// {
	// 	printf("In %d\n", counter);
	// 	fwrite(items + i, sizeof(item_details), 1, bin);
	// }

	fclose(bin);
	fclose(file);
	free(items);

	return 0;
}

int ask(item_details** list){

	printf("What do you wish to do with your inventory?\n");
	printf("			1. Add an item\n");
	printf("			2. Delete an item\n");
	printf("			3. Change an item\n");
	printf("			4. Check inventory\n");

	int in;
	scanf("%d", &in);

	if (in == 1)
	{   counter++;

		list = (item_details**)realloc(list, (counter+1)*sizeof(item_details*));

		add(*(list + counter));
		//print(list, counter);
	}
	else if (in == 2)
	{
		del(list, counter);
		counter--;
	}
	else if (in == 3)
	{
		print(list, counter);
		printf("Which item do you want to change?  ");
		int num;
		scanf("%d", &num);
	    printItem(list + num- 1);
		append(list + num- 1, counter - (num- 1));
	}
	else if (in == 4)
	{
		print(list, counter);
	}

	return in;
}

void add(item_details* temp){
	
    temp = (item_details*)malloc(sizeof(item_details));
	char ch;

	printf("Enter SKU    ");
	scanf("%d", &(temp->sku));

	printf("Enter name    "); 
	char tempo[30];
	scanf("%s", tempo);
	strcpy(temp->name, tempo);

	printf("Enter cost price   ");
	scanf("%f", &temp->cp);

	printf("Enter MRP   ");
	scanf("%f", &temp->mrp);

	printf("Discount (in %%) applicable   ");
	scanf("%f", &temp->discount);

	printf("Is it persishable ?    "); 
	scanf("%s", &ch);	
	if (ch == 'y')
	{
		temp->persishable = true;		
	}
	else if (ch == 'n')
	{
		temp->persishable = false;		
	}

	printf("Enter catergory    ");
	scanf("%s", &temp->catergory);
}

void del(item_details** list, int n){

	print(list, n);

	printf("Which item do you want to delete?   ");
	int num;
	scanf("%d", &num);
	num--;

	for (int i = num; i < n; ++i)
	{
		list[i] = list[i + 1];
	}
}

void append(item_details** list, int n){

	int num;

	// printf("Which field do you want to change?  ");
	// scanf("%d", &num);

	// if (num == 1)
	// {
	// 	printf("SKU cannot be chaned\n");
	// }
	// else if (num == 2)
	// {
	// 	printf("Enter new name    "); 
	// 	char tempo[30];
	// 	scanf("%s", tempo);
	// 	strcpy(list->name, tempo);
	// }
	// else if (num == 3)
	// {
	// 	printf("Enter new cost price\n");
	// 	scanf("%f", &list->cp);
	// }
	// else if (num == 4)
	// {
	// 	printf("Enter new MRP\n");
	// 	scanf("%f", &list->mrp);
	// }
	// else if (num == 5)
	// {
	// 	printf("Enter new discount \n");
	// 	scanf("%f", &list->discount);
	// }
	// else if (num == 6)
	// {
	// 	printf("Enter new catergory \n");
	// 	scanf("%s", &list->catergory);
	// }
	// else if (num == 7)
	// {
	// 	printf("Do you want to change perishibility?\n");

	// 	char c;
	// 	scanf("%s", &c);

	// 	if (c == 'y')
	// 	{
	// 		list->persishable = (!(list->persishable));
	// 	}
	// }
}

void print(item_details** list, int n){

	printf("\033[2J");

	printf("\nYour inventory contains: \n");
	printf("Item No.   \tSKU       Name      \t\t\tMRP\n");

	for (int i = 0; i <= n; ++i)
	{
		printf("    %d\t\t%d\t  %s(%c)\t\t\t%0.2f", i+1, (*(list + i))->sku, (*(list + i))->name, (*(list + i))->catergory, (*(list + i))->mrp);
		if ((*(list + i))->persishable)
		{
			printf("\t%s\n", "(Persishable)");
		}
		else{
		 	printf("\n");
		}
	}
	printf("\n");
}

void printItem(item_details** list){

	//item_details temp = *list;
	int i = 1;

	// printf("%d. SKU   %d\n", i, temp.sku);
	// i++;
	// printf("%d.  Name   %s\n", i, temp.name);
	// i++;
	// printf("%d.  Cost Price   %0.2f\n", i, temp.cp);
	// i++;
	// printf("%d.  MRP   %0.2f\n", i, temp.mrp);
	// i++;
	// printf("%d.  Discount(%%)   %0.2f\n", i, temp.discount);
	// i++;
	// printf("%d.  Catergory   %c\n", i, temp.catergory);	
	// i++;
	// printf("%d.  Persishable ?   %c\n", i, temp.persishable);
}