menu dream market
#include<stdlib.h>
#include<string.h>
struct data{
char nama[50];
int banyak,harga;
struct data *next;
struct data *prev;
}*head=NULL,*tail=NULL,*curr;
struct data* createnode(char name[],int qnty){
struct data *node = (struct data*)malloc(sizeof(struct data));
strcpy(node->nama,name);
node->banyak=qnty;
node->harga=(rand()%(499000))+1000;
node->next = node->prev=NULL;
return node;
};
void pushhead(struct data *node){
if(head==NULL){
head=tail=node;
}
else{
node->next=head;
head->prev=node;
head=node;
}
}
void pushtail(struct data *node){
tail->next=node;
node->prev=tail;
tail= node;
}
void insertdata(char name[],int qnty){
struct data *node = createnode(name,qnty);
if(head==NULL){
pushhead(node);
}
else{
if(strcmp(head->nama,name)>0){
pushhead(node);
}
else if(strcmp(tail->nama,name)<0){
pushtail(node);
}
else{
struct data *temp = head;
while(temp!=NULL){
if(strcmp(temp->nama,name)>0) break;
temp = temp->next;
}
node->next = temp;
node->prev = temp->prev;
temp->prev->next=node;
temp->prev = node;
}
}
}
void printll(){
struct data *node= head;
int i=1;
int total=0;
printf("\nNO - Nama (quantity) - Price\n");
printf("===================================\n");
while(node!=NULL){
printf("%d - %s(%d) - %-7d\n",i,node->nama,node->banyak,node->harga);
total+=(node->harga*node->banyak);
node=node->next;
i++;
}
printf("Total harga = Rp%d\n\n",total);
}
//void printbelakang(){
// struct data *node = tail;
// while(node!=NULL){
// printf("%s %d %d\n",node->nama,node->banyak,node->harga);
// node=node->prev;
// }
//}
void pophead(){
if(!head){
return;
}
else if(head==tail){
head = tail =NULL;
free(head);
}
else{
data *temp = head->next;
head->next=temp->prev=NULL;
free(head);
head=temp;
}
}
void poptail(){
struct data *temp = tail->prev;
temp->next=tail->prev=NULL;
free(tail);
tail=temp;
}
void popmid(char temp[]){
curr=head;
while(curr!=NULL){
if(strcmp(curr->nama,temp)==0){
break;
}
curr=curr->next;
}
if(curr==NULL){
}
else{
curr->prev->next=curr->next;
curr->next->prev=curr->prev;
free(curr);
}
}
void deletes(char temp[]){
if(strcmp(head->nama,temp)==0){
pophead();
}
else if(strcmp(tail->nama,temp)==0){
poptail();
}
else{
popmid(temp);
}
}
bool search (char temp[]){
curr=head;
while(curr!=NULL){
if(strcmp(curr->nama,temp)==0){
break;
}
else{
curr=curr->next;
}
}
if(curr==NULL){
return false;
}
else{
return true;
}
}
int main(){
char tempnama[50];
int tempbanyak;
int menu=0;
char temp[50];
int change;
do{
printf(" Dreamer Market\n");
printf("=======================\n");
printf("1. Add item\n");
printf("2. View item\n");
printf("3. Edit quantity\n");
printf("4. Delete item\n");
printf("5. Checkout\n");
printf(">> ");
scanf("%d",&menu);getchar();
switch(menu){
case 1:
printf("\n Add item\n");
printf("=============\n");
printf("Item name: ");
scanf("%s",&tempnama);getchar();
printf("Item quantity: ");
scanf("%d",&tempbanyak);getchar();
insertdata(tempnama,tempbanyak);
printf("\nItem added\n\n");
break;
case 2:
printll();
break;
case 3:
printf("\n Edit item\n");
printf("=================\n");
printf("Item name: ");
scanf("%s",&temp);
if(search(temp)){
printf("Total Quantity: %d",curr->banyak);
printf("Insert Quantity to be changed: ");
scanf("%d",&change);getchar();
curr->banyak=change;
printf("\nItem updated\n\n");
}
else{
printf("\nItem is not found\n\n");
}
break;
case 4:
printf("\n Delete item\n");
printf("================\n");
printf("Item name: ");
scanf("%s",&temp);
deletes(temp);
printf("\nItem deleted\n\n");
break;
case 5:
break;
}
}while(menu!=5);
printll();
printf("It's on us, Kindness is Free, Stay safe from corona :)\n");
return 0;
}
