#include

#define SALES_TAX 0.07

#define ITALIAN_BEEF 7.99

#define SUB_SANDWITCH 5.99

#define NACHO_SUPREME 6.99

#define MEXICAN_TACO 2.99

#define NACHO_REGULAR 4.99

#define HOT_DOG 2.99

#define SLUSHY 2.49

#define MILK_SHAKE 3.49

#define ICE_CREAM 1.79

#define FOUNTAIN_DRINKS 1.00

int main()

{

int month,day,year;

month = 01;

day = 12;

year = 2023;

int selection1, selection2;

float first_item_price, second_item_price, total, discount_on_item1, discount_on_item2, total_after_discount, tax, subtotal;

first_item_price = 0;

second_item_price = 0;

total_after_discount = 0;

discount_on_item1 = 0;

discount_on_item2 = 0;

tax = 0;

subtotal = 0;

printf(" Hello,");

printf(" I'm Md Maruf Hossain.");

printf(" Welcome to my first project!");

printf(" ITS24000 Spring 2023");

printf(" Date: %d/%d/%d ",month,day,year);

printf(" ----------------------------------");

printf(" ----Welcome to GRAND FOOD!-----");

printf(" -------------Menu:----------------");

printf(" 1. Italian Beef -----> $%8.2f-", ITALIAN_BEEF);

printf(" 2. Sub Sandwitch ----> $%8.2f-", SUB_SANDWITCH);

printf(" 3. Nacho Supreme ----> $%8.2f-", NACHO_SUPREME);

printf(" 4. Mexican Taco -----> $%8.2f-", MEXICAN_TACO);

printf(" 5. Nacho Regular ----> $%8.2f-", NACHO_REGULAR);

printf(" 6. Hot Dog ----------> $%8.2f-", HOT_DOG);

printf(" 7. Slushy -----------> $%8.2f-", SLUSHY);

printf(" 8. Milk Shake -------> $%8.2f-", MILK_SHAKE);

printf(" 9. Ice Cream --------> $%8.2f-", ICE_CREAM);

printf(" 10. Fountain Drinks -> $%8.2f-", FOUNTAIN_DRINKS);

printf(" ----------------------------------");

printf(" Please enter the number of the item you would like to purchase -> ");

scanf("%d", &selection1);

switch (selection1)

{

case 1:

printf(" Your selected item is Italian Beef!");

first_item_price = first_item_price + ITALIAN_BEEF;

break;

case 2:

printf(" Your selected item is Sub Sandwitch!");

first_item_price = first_item_price + SUB_SANDWITCH;

break;

case 3:

printf(" Your selected item is Nacho Supreme!");

first_item_price = first_item_price + NACHO_SUPREME;

break;

case 4:

printf(" Your selected item is Mexican Taco!");

first_item_price = first_item_price + MEXICAN_TACO;

break;

case 5:

printf(" Your selected item is Nacho Regular!");

first_item_price = first_item_price + NACHO_REGULAR;

break;

case 6:

printf(" Your selected item is Hot Dog!");

first_item_price = first_item_price + HOT_DOG;

break;

case 7:

printf(" Your selected item is Slushy!");

first_item_price = first_item_price + SLUSHY;

break;

case 8:

printf(" Your selected item is Milk Shake!");

first_item_price = first_item_price + MILK_SHAKE;

break;

case 9:

printf(" Your selected item is Ice Cream!");

first_item_price = first_item_price + ICE_CREAM;

break;

case 10:

printf(" Your selected item is Fountain Drinks!");

first_item_price = first_item_price + FOUNTAIN_DRINKS;

break;

default:

printf(" You didn't select any of these things!");

printf(" Select between (1 to 10)! Try again!");

break;

}

printf(" ------------------------------------------------------");

printf(" We are currently having a buy one, get one off sale!");

printf(" Select your 2nd item -> ");

scanf("%d", &selection2);

switch (selection2)

{

case 1:

printf(" Your 2nd item is Italian Beef!");

second_item_price = second_item_price + ITALIAN_BEEF;

break;

case 2:

printf(" Your 2nd item is Sub Sandwitch!");

second_item_price = second_item_price + SUB_SANDWITCH;

break;

case 3:

printf(" Your 2nd item is Nacho Supreme!");

second_item_price = second_item_price + NACHO_SUPREME;

break;

case 4:

printf(" Your 2nd item is Mexican Taco!");

second_item_price = second_item_price + MEXICAN_TACO;

break;

case 5:

printf(" Your 2nd item is Nacho Regular!");

second_item_price = second_item_price + NACHO_REGULAR;

break;

case 6:

printf(" Your 2nd item is Hot Dog!");

second_item_price = second_item_price + HOT_DOG;

break;

case 7:

printf(" Your 2nd item is Slushy!");

second_item_price = second_item_price + SLUSHY;

break;

case 8:

printf(" Your 2nd item is Milk Shake!");

second_item_price = second_item_price + MILK_SHAKE;

break;

case 9:

printf(" Your 2nd item is Ice Cream!");

second_item_price = second_item_price + ICE_CREAM;

break;

case 10:

printf(" Your 2nd item is Fountain Drinks!");

second_item_price = second_item_price + FOUNTAIN_DRINKS;

break;

default:

printf(" You didn't select any of these things!");

printf(" Select between (1 to 10)! Try again!");

break;

}

total = first_item_price + second_item_price;

discount_on_item1 = discount_on_item1 + (first_item_price/2);

discount_on_item2 = discount_on_item2 + (second_item_price/2);

if( first_item_price < second_item_price)

{

total_after_discount = discount_on_item1 + second_item_price;

}

else

{

total_after_discount = first_item_price + discount_on_item2;

}

printf(" ----------------------------------");

printf(" Total: $%8.2f-", total);

printf(" ----------------------------------");

printf(" ----------------------------------");

if (first_item_price < second_item_price)

{

printf(" Discount: $%8.2f-", discount_on_item1);

}

else

{

printf(" Discount: $%8.2f-", discount_on_item2);

}

printf(" ----------------------------------");

printf(" Total after discount: $%8.2f-", total_after_discount);

printf(" ----------------------------------");

tax = total_after_discount * SALES_TAX;

printf(" Tax: $%8.2f-", tax);

printf(" ----------------------------------");

subtotal = total_after_discount + tax;

printf(" Subtotal: $%8.2f-", subtotal);

printf(" ----------------------------------");

printf(" THANK YOU! You are all set! Have a GREAT day!");

return 0;

}

how to change this code with these conditions:

Create a void function that takes no parameters to display your welcome screen

Create a void function that takes no parameters to display your store menu screen

Create a value-returning function that takes no parameters and prompts the user for a menu selection, checks for its validity and returns the item selected when valid

Create a value-returning function that takes the item selected as a parameter and returns the price of the item selected

Create a value-returning function that takes the prices of the two items selected and returns the discount they will receive

Create a void function that takes the item prices, discount, tax, and total and prints the receipt