Strukdat fix 02

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
//int jumlah=0;

void clear()
{
	for(int i=0;i<25;i++)
	{
		printf("\n");
	}
}

struct data
{
	char name[21];
	char type[100];
	int quantity;
	int price;
	struct data *next;
}*head=NULL,*tail=NULL,*curr=NULL;

void pushTail(char name[],char type[],int quantity,int price)
{
	curr=(struct data*)malloc(sizeof(struct data));
	strcpy(curr->name,name);
	strcpy(curr->type,type);
	curr->quantity=quantity;
	curr->price=price;
	curr->next=NULL;

	if(head == NULL)
	{
		head=tail=curr;
	}
	else
	{
		tail->next=curr;
		tail=curr;
	}
	tail->next=NULL;
}

void itemlist()
{
	clear();
	int i=1;
	printf("==================================================================================\n");
	printf("%5s. | %-20s | %-20s | %-10s | %-10s |\n","No.","Name","Type","Quantity","Price");
	printf("==================================================================================\n");
	curr=head;//posisi curr di head
	while(curr != head)
	{
		printf("%5d. | %-20s | %-20s | %-10d | %-10d |\n",i,curr->name,curr->type,curr->quantity,curr->price);
		curr=curr->next;
		i++;
	}
	printf("==================================================================================\n");
	getchar();
}

void additem()
{
	char tempname[21];
	char temptype[100];
	int tempqty;
	int tempprice;
	do{
	printf("Input name fo the new item[3..20] = ");
	scanf("%[^\n]",&tempname);fflush(stdin);
	}while(strlen(tempname)<3 || strlen(tempname)>20);


	do{
	printf("input type of the new item[processor/graphic card/memory] = ");
	scanf("%[^\n]",temptype);fflush(stdin);
	}while(strcmp(temptype,"processor")==1 &&strcmp(temptype,"graphic card")==1 && strcmp(temptype,"memory")==1);


	do{
	printf("input Quantity of the new item[1..20] = ");
	scanf("%[^\n]",&tempqty);fflush(stdin);
	}while(tempqty<1 && tempqty>20);


	do{
	printf("input Price of the new item[1..$1000] = $");
	scanf("%[^\n]",&tempprice);fflush(stdin);
	}while(tempprice<1 && tempprice>1000);

	clear();
	printf("--- add new item success ---");

	pushTail(tempname,temptype,tempqty,tempprice);

}

void menu()
{
	clear();
	puts("BLUE COMPUTER ADMINISTRATOR");
	puts("+++++++++++++++++++++++++++");
	puts("1. Item List");
	puts("2. Add (PUSH) New Item");
	puts("3. Exit");
	printf(">> Input your choice : ");
}

int main()
{
	int choose;

	do{
		choose=0;
		menu();
		scanf("%d",&choose);fflush(stdin);
		switch(choose)
		{
			case 1:itemlist();break;
			case 2:additem();break;

		}
	}while(choose !=3);




	getchar();
	return 0;
}