MOTOR

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <malloc.h>
#include <string.h>

void clrscr() {
	system("@cls||clear");
}

struct node {
	int qty;
	char name[20];
	int price;
	struct node *next;
};

struct node *head = NULL;

struct node *create(struct node *head) {
	struct node *new_node, *poin;
	char name[20];
	int qty, harga,var=0;
	do{
		printf("Input name of motorcycle's part [3...30] \t: ");
		fflush(stdin);
		scanf("%[^\n]",&name);
	} while (strlen(name)<3 || strlen(name)>30);
	do{
		printf("Input quantity of motorcycle's \t\t\t: ");
		scanf("%d",&qty);
	}while (qty<1 || qty>20);
	printf("Input price of motorcycle's part [$1...$1000] \t: ");
	scanf("%d",&harga);

	new_node = (struct node*)malloc(sizeof(struct node));
	strcpy(new_node->name,name);
	new_node->qty=qty;
	new_node->price=harga;
	if (head==NULL) {
		new_node->next=new_node;
		head = new_node;
	}

	return head;
}

struct node *push(struct node *head) {
	struct node *new_node, *poin;
	char name[20];
	int qty, harga,var=0;
	do{
		printf("Input name of motorcycle's part [3...30] \t: ");
		fflush(stdin);
		scanf("%[^\n]",&name);
	} while (strlen(name)<3 || strlen(name)>30);
	do{
		printf("Input quantity of motorcycle's \t\t\t: ");
		scanf("%d",&qty);
	}while (qty<1 || qty>20);
	printf("Input price of motorcycle's part [$1...$1000] \t: ");
	scanf("%d",&harga);

	new_node = (struct node*)malloc(sizeof(struct node));
	strcpy(new_node->name,name);
	new_node->qty=qty;
	new_node->price=harga;

	new_node->next=new_node;
	poin=head;
	while (poin->next!=head) {
		poin=poin->next;
	}
	poin->next=new_node;
	new_node->next=head;
	head = new_node;

	return head;
}

struct node *print(struct node *head) {
	struct node *poin;
	int no=1;
	printf("\t\t\t\t ----- Item List -----\n\n");
	printf("-------+--------------+-----------+-----------+\n");
	printf("| No.  | Name \t\t\t  | Quantity  | Price($)  |\n");
	printf("-------+--------------+-----------+-----------+\n");
	poin = head;
	if (poin->next!=head) {
		printf("|");
		printf("% -5d |",no);
		printf("% -25s |",poin->name);
		printf("% -10d |",poin->qty);
		printf("% -10d |\n",poin->price);
		poin = poin->next;
		no++;
	}
	else {
		printf("|");
		printf("% -5d |",no);
		printf("% -25s |",poin->name);
		printf("% -10d |",poin->qty);
		printf("% -10d |\n",poin->price);
		poin = poin->next;
	}
	printf("-------+--------------+-----------+-----------+\n");

}

struct node *pop(struct node *head) {
	struct node *poin, *ptr;
	poin = head;
	ptr = head;
	while (poin->next!=head) {
		poin=poin->next;
	}
	if (poin->next!=poin) {
		poin->next=head->next;
		head = poin->next;
		free(ptr);
	}
	else {
		poin->next=NULL;
		head=NULL;
		free(ptr);
	}
	return head;
}

int main() {
	int pil;
	struct node *poin;
	do {
		clrscr();
		printf("RED MOTORCYCLE PARTS\n");
		printf("+++++++++++++++++++++++++++++++\n\n");
		printf("1. Item List\n");
		printf("2. Add <Push> New Item\n");
		printf("3. Delete <Pop> Recently added item\n");
		printf("4. Exit\n\n");
		do {
			printf("Input Your Choice : ");
			scanf("%d",&pil);
		}while (pil<1 || pil>4);
		switch(pil) {
			case 1 : {
				clrscr();
				if (head==NULL) {
					printf("\t\t\t\t ----- Item List -----\n\n");
					printf("-------+--------------+-----------+-----------+\n");
					printf("| No.  | Name \t\t  | Quantity  | Price($)  |\n");
					printf("-------+--------------+-----------+-----------+\n");
					printf("|\t\t\t!!!No data Available!!!\t\t\t\t\t     |\n");
					printf("-------+--------------+-----------+-----------+\n");
				}
				else {
					print(head);
				}
				getch();
				break;
			}
			case 2 : { clrscr();
				if (head==NULL) {
					head = create(head);
				}
				else {
					head = push(head);
				}
				printf("\n\n---Add Item Success---");
				getch();
				break;
			}
			case 3 :{ clrscr();
				if (head==NULL) {
					printf("\n\n\t\t-----There are no item available-----");
					getch();
				}
				else {
					head = pop(head);
					printf("\n\n\t\t ---One Stack has been removed---");
					getch();
				}
				break;
			}
			case 4 : {
				clrscr();
				printf("\n\n\t\t---This Program Has Finished---");
				free(head);
				break;
			}
		}
	}while (pil!=4);
}