Part 1

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

typedef struct node
{
    char foodname[30];
    int data, stock;
    float price;
    struct node *next;
}node;

node *head, *menu;

int credit_card[20];
float total_poisa[20];
char problem_box[20];

void print(char list[])
{
    printf("%s", list);
}

void line(int cnt)
{
    int i;
    for(i=1; i<=cnt; i++)
        printf("\n");
}

void tab(int cnt)
{
    int i;
    for(i=1; i<=cnt; i++)
        printf("\t");
}

void scr()
{
    system("cls");
}

foodlist()
{
    line(10); tab(20); print("1.   \"*Food Menu          |\"");line(2); Sleep(350);
    line(10); tab(20); print("2.   \"*Admin Log In          |\"");line(2); Sleep(350);
    line(10); tab(20); print("3.   \"*Rules & Reg          |\"");line(2); Sleep(350);
    line(10); tab(20); print("4.   \"*Problem & Suggestion          |\"");line(2); Sleep(350);
    line(10); tab(20); print("5.   \"*Exit          |\"");line(2); Sleep(350);
}

void insertfood(char foodname[30], int data, int stock, float price)
{
    node *temp;
    temp=(node*)malloc(sizeof(node));
    temp->data=data;
    temp->stock=stock;
    temp->price=price;
    strcpy(temp->foodname,foodname);
    temp->next=NULL;

    if(head==NULL)
    {
        head=temp;
        menu=head;
    }
    else
    {
        while(head->next!=NULL)
        {
            head=head->next;
        }
        head->next=temp;
    }
}

void foodlist()
{
    node *start;
    start=menu;

    printf("---------------------------------------------------\n");
    printf(" Item Number | Food Name | Price | Stock            \n");

    while(start!=NULL)
    {
        printf("---------------------------------------------------\n");
        line(30); tab(30);
        printf(" %d     | %s     | %d     | %.2f            \n", start->data, start->foodname, start->stock, start->price);Sleep(200);line(3);

        printf("---------------------------------------------------\n");

        start=start->next;
    }
}

int count()
{
    int cnt=0;

    node *temp;
    temp=menu;

    while(temp!=NULL)
    {
        temp=temp->next;
        cnt++;
    }
    return cnt;
}

int total_money(int foodchoice, int much)
{
    scr();
    node *temp;
    temp=(node*)malloc(sizeof(node));
    temp=menu;

    while(temp->data!=foodchoice)
    {
        temp=temp->next;
    }
    if(temp->data==foodchoice)
    {
        int o;
        float total=temp->price*much;
        line(3);tab(2); print("Total money for your order: ");line(2);
        line(3);tab(2); printf("%.2f", total); line(2);
        line(10);tab(20); print("Enter your table number: ");line(2);
        line(10);tab(20); scanf("%d", &o);line(2);

        return total;
    }
}