Why I can't print out the change due with my coding?anyone can solve it to me?
Code:#include<stdio.h>
#include<math.h>
void main()
{
int discount,set_of_combo;
double total,a_payable,amount,cash;
double g_tax,s_tax,change_due,a_a_payable;
printf("Enter Number Of Combo Set : ");
scanf("%d",&set_of_combo);
printf("Enter Discount Voucher (RM) : ");
scanf("%d",&discount);
//calculation
amount = set_of_combo*7.88;
g_tax = amount * 6 / 100;
s_tax = amount *10 / 100;
total = g_tax + s_tax + amount;
a_payable = total - discount;
a_a_payable = a_payable;
change_due = cash - a_a_payable
printf("Good Day and Welcome To KLFC Sdn.Bhd");
printf("R E C E I P T\n");
printf("+-------------------------+------------------+-------------------+\n");
printf("+ Description | Rate | Amount(RM) |\n");
printf("+-------------------------+------------------+-------------------+\n");
printf("+ COMBO SET * %d | 7.88 | %.2f |\n",set_of_combo,amount);
printf("+ Goverment Tax | 6%% | %.2f |\n",g_tax);
printf("+ Service Tax | 10%% | %.2f |\n",s_tax);
printf("+-------------------------+------------------+-------------------+\n");
printf("+ S U B T O T A L | %.2f |\n",total);
printf("+============================================+===================|\n");
printf("+ Discount Vouvher (RM) %.2lf +\n",discount);//discount voucher
printf("+ -------- |\n");
printf("+ Amount Payable %.2lf |\n",a_payable);//amount payable
printf("+ ======== |\n");
printf("+ Adjusted Amount Payable %.2lf |\n",a_a_payable);//adjustment amount payable
printf("=================================================================+\n");
printf(" CASH ");
scanf("%.2lf",&cash);
printf(" Change Due:\n",change_due);
printf("==================================================================\n");
printf(" THANK YOU and HAVE A NICE DAY\n");
}
