Answer to Question #260901 in C for AMY

Question

Write a program that calculate the cost of energy for energy units restricted between 0 to 500 kWh for an amount less than $6 000.00 for any Zimbabwean resident customer and any amount and unlimited number of units for a foreign resident customer buying from outside Zimbabwe at a rate of $90.00 to one USD. The tariffs are as follows:

• 0 to 50 kWh cost $2.25

• Above 50 kWh to 100 kWh cost $4.51 / kWh

• Above 100kWh to 200 kWh cost $7.89 / kWh

• Above 200kWh to 300 kWh cost $11.25 / kWh

• Above 300kWh to 400 kWh cost $12.94 / kWh

• Above 400 kWh cost $13.50 / kWh

Answer 1

#include <stdio.h>


double determineEnergyCost(double units)
{
    if(units > 0 && units <= 50)
        return 2.25;
    if(units > 50 && units <= 100)
        return 4.51;
    if(units > 100 && units <= 200)
        return 7.89;
    if(units > 200 && units <= 300)
        return 11.25;
    if(units > 300 && units <= 400)
        return 12.94;
    return 13.5;
}
int main()
{
    printf("Are you Zimbabwean resident customer?[y/n]");
    char answer;
    scanf(" %c", &answer);


    double units;
    printf("\nunits = ");
    scanf("%lf", &units);


    if(answer == 'y')
    {
        if(units <= 500)
        {
            double energyCost = determineEnergyCost(units);
            double cost = energyCost * units;
            if (cost <= 6000)
                printf("Cost: %g$", cost);
            else
                printf("Sorry, but your amount is more than 6000$");
        }
        else
            printf("Sorry, but you can't buy more than 500kWh");
    }
    else
    {
        double energyCost = determineEnergyCost(units);
        double cost = energyCost * units;
        printf("Cost: %g$", cost);
    }


    printf("\n\n");
    return 0;
}