Untitled

#include <stdio.h>
#include <stdlib.h> 

void Menu()
{
    printf("\n--- Menu ---\n");
    printf("1. Burger - Rs 150\n");
    printf("2. Pizza - Rs 399\n");
    printf("3. Sandwich - Rs 80\n");
    printf("4. Coffee - Rs 120\n");
    printf("5. Exit\n");
}
float discount(float totalamout)
{
    if(totalamout>=500)
    {
        printf("Congratulations! You are eligible for a 10%% discount.\n");
        totalamout=totalamout-(0.1*totalamout);
        return totalamout;
    }
    return totalamout;
}
int main()
 {
    int choice, quantity;
    float totalAmount = 0.0;

    while (1) {
        //#ifdef _WIN32
          //  system("cls");  
        //#else
          //  system("clear"); 
        //#endif

        Menu();                          
        printf("Enter the item number (1-5): "); 
        scanf("%d", &choice);

        if (choice == 5) {
            break;
        }

        switch (choice) {
            case 1:
                printf("Enter quantity for Burger: ");
                scanf("%d", &quantity);
                if (quantity > 0)
                    totalAmount =totalAmount + quantity * 150;
                else
                    printf("Invalid quantity!\n");
                break;

            case 2:
                printf("Enter quantity for Pizza: ");
                scanf("%d", &quantity);
                if (quantity > 0)
                    totalAmount = totalAmount+ quantity * 399;
                else
                    printf("Invalid quantity!\n");
                break;

            case 3:
                printf("Enter quantity for Sandwich: ");
                scanf("%d", &quantity);
                if (quantity > 0)
                    totalAmount = totalAmount+ quantity * 80;
                else
                    printf("Invalid quantity!\n");
                break;

            case 4:
                printf("Enter quantity for Coffee: ");
                scanf("%d", &quantity);
                if (quantity > 0)
                    totalAmount = totalAmount+ quantity * 120;
                else
                    printf("Invalid quantity!\n");
                break;

            default:
                printf("Invalid choice! Please select a valid item from the menu.\n");
        }

        printf(" Current Total: $%.2f\n", totalAmount);
        printf(" Press Enter to continue...");

    }

    #ifdef _WIN32
        system("cls");
    #else
        system("clear");
    #endif

        totalAmount = discount(totalAmount);


    printf("--- Final Bill ---\n");
    printf("Total Amount to be Paid: Rs%.2f\n", totalAmount);

    return 0;
}



//---------------------------------------------------------------------------------------//

#include <stdio.h>
#include <string.h>
#include <math.h>

const char *COLOR_CODES[] = {"black", "brown", "red", "orange", "yellow",
                              "green", "blue", "violet", "gray", "white"};

int search(const char *COLOR_CODES[], int size, const char *target)
 {
    for (int i = 0; i < size; i++)
     {
        if (strcmp(COLOR_CODES[i], target) == 0)
        {
            return i; 
        }
    }
    return -1; 
}

int main() {
    char band1[10], band2[10], band3[10];
    int digit1, digit2, multiplier;
    float resistance;

    printf("Enter the colors of the resistor's three bands:\n");
    printf("Type the colors in lowercase letters only.\n");

    printf("Band 1: ");
    scanf("%s", band1);
    printf("Band 2: ");
    scanf("%s", band2);
    printf("Band 3: ");
    scanf("%s", band3);

    digit1 = search(COLOR_CODES, 10, band1);
    digit2 = search(COLOR_CODES, 10, band2);
    multiplier = search(COLOR_CODES, 10, band3);

    if (digit1 == -1 || digit2 == -1 || multiplier == -1) {
        printf("Invalid color entered. Try again.\n");
        return 1; 
    }

    resistance = (digit1 * 10 + digit2) * pow(10, multiplier);

    if (resistance >= 1000)
    {
        printf("Resistance: %.2f kΩ\n", resistance / 1000);
    } 
    else
    {
        printf("Resistance: %.2f Ω\n", resistance);
    }

    return 0;
}