Problem 2

#include <stdio.h>

int main() {
    int amount, price, totalAmount = 0, totalPrice = 0;
    while (true) {
        printf("Enter amount (in kg): ");
        scanf("%d", &amount);
        if (amount == 0) {
            break;
        } else if (amount < 0) {
            printf("Invalid input, enter a positive number\n");
            continue;
        } else {
            totalAmount += amount;
        }
        printf("Enter Price: ");
        scanf("%d", &price);
        if (price < 0) {
            printf("Invalid input, enter a positive number\n");
            totalAmount -= amount;
            continue;
        } else {
            totalPrice += price;
        }
    }
    double avgPrice = ((totalPrice * 1.0) / totalAmount);
    printf("Total amount (in kg): %d, Total Price: %d, Average price per kg: %.2lf\n", totalAmount, totalPrice, avgPrice);
}