#include <stdio.h>
 
int main() {
    int choice;
    float total = 0;
    float tax;
 
    // แสดงเมนู
    printf("===== Menu =====\n");
    printf("1) Hamburger - 19 Baht\n");
    printf("2) Cheeseburger - 25 Baht\n");
    printf("3) Fishburger - 25 Baht\n");
    printf("4) Coke - 15 Baht\n");
    printf("5) Fanta - 15 Baht\n");
    printf("6) French Fries - 20 Baht\n");
    printf("7) End Order\n");
 
    while (1) {
        printf("\nเลือกเมนู (1-7): ");
        scanf("%d", &choice);
 
        if (choice == 7) { // กด 7 เพื่อจบการสั่งซื้อ
            break;
        }
 
        switch (choice) {
            case 1: total += 19; break;
            case 2: total += 25; break;
            case 3: total += 25; break;
            case 4: total += 15; break;
            case 5: total += 15; break;
            case 6: total += 20; break;
            default: printf("❌ เมนูไม่ถูกต้อง กรุณาเลือกใหม่!\n");
        }
    }
 
    // คำนวณภาษี 10%
    tax = total * 0.10;
    float grandTotal = total + tax;
 
    // แสดงผลลัพธ์
    printf("\n====================\n");
    printf("ยอดรวมค่าอาหาร: %.2f Baht\n", total);
    printf("ภาษี 10%%: %.2f Baht\n", tax);
    printf("ราคารวมสุทธิ: %.2f Baht\n", grandTotal);
    printf("====================\n");
 
    return 0;
}
 

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