#include <stdio.h>

#include<stdlib.h>


int getinput();
float calcDiscount(int utilities,float amountpay,int typebill);
void calcTotalpaid(float amountpay ,float discount,float *totaldiscount, float *totalpaid);
void display(float totalpaid);

int main()
{
    int counter=1;
    float totalpaid;
    while (counter!=0)
    {
        int typebill,utilities,internet;
        float amountpay = 0,totaldiscount,discount;
        typebill=getinput();

        if (typebill==1)
        {
            printf("Enter 1=TNB or 2=SYABAS : ");
            scanf("%d",&utilities);
        }
        else if(typebill==2)
        {
            printf("Enter 1=DIGI 2=UNIFI or 3=MAXIS FIBRE:");
            scanf("%d", &internet);
        }

        fflush(stdin);
        printf("\nEnter amount to pay : ");
        scanf(" %f",&amountpay);

        discount= calcDiscount( utilities, amountpay, typebill);
        calcTotalpaid(amountpay ,discount,&totaldiscount,&totalpaid);
        printf("\nTotal after discount = RM%.2f",totaldiscount);
        printf("\nContinue? 1=yes, 0=no: ");
        scanf("%d", &counter);
    }
        display(totalpaid);



return 0;
}

int getinput()
{
    int typebill;
    printf("\nEnter bill type (1=utilities, 2=internet): ");
    scanf("%d",&typebill);
    return typebill;
}

float calcDiscount(int utilities,float amountpay,int typebill)
{


    float discount;
    int internet;

    if (typebill==1)
    {
        if (utilities==1)
        {
            discount=0.05;
        }
        else
        {
            discount=0.1;
        }
    }
    else
    {
        if (typebill==2)
        {
            if (internet==1)
            {
                discount=0.05;
            }
            else if (internet==2)
            {
               discount=0.05;
            }
            else
            {
                discount=0.05;
            }
        }
    }
 return discount;
}

void calcTotalpaid(float amountpay ,float discount,float *totaldiscount, float *totalpaid)
{
    *totaldiscount= amountpay*(1-discount);

    *totalpaid= *totalpaid + *totaldiscount;
}

void display(float totalpaid)
{
    printf("\nTotal paid : RM %.2f", totalpaid);
    printf("\nThank You for using TickNGo");
}