float weight, price;
float total = 0;

printf("Enter the weight in kg (0 to stop): ");
scanf("%f", &weight);

while (weight != 0) {
    printf("Enter the unit price: ");
    scanf("%f", &price);

    print("\n\n%.2f kg @ %.2f costs $%.2f\n", weight, price, weight * price);
    total += weight * price;

    printf("Enter the weight in kg (0 to stop): ");
    scanf("%f", &weight);
}

printf("\n** MAWSON FRUIT SELLERS **\n");
printf("TotalCost $ %.2f\n", total);
printf("GST included $ %.2f", 0.1 * total);