1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
//Example 12.14
//Updating Customer Records
Date = struct('month',0,'day',0,'year',0);
lastpayment = Date;
account = struct('Name'," ",'street'," ",'city'," ",'acct_no',0,'acct_type',' ','oldbalance',0,'newbalance',0,'payment',0,'lastpayment',0);
customer = account;
function[] = main()
printf("CUSTOMER BILLING SYSTEM\n\n");
printf("How many customers are there?");
n = scanf("%d");
for i = 1:n;
customer = readinput(i,customer);
//determine account status
if customer(i).payment > 0 then
if customer(i).payment < (0.1*customer(i).oldbalance) then
customer(i).acct_type = 'O';
else
customer(i).acct_type = 'C';
end
else
if customer(i).oldbalance > 0 then
customer(i).acct_type='D';
else
customer(i).acct_type='C';
end
end
//adjust account balance
customer(i).newbalance = customer(i).oldbalance - customer(i).payment;
end
for i = 1:n
writeoutput(i,customer);
end
endfunction
function[customer] = readinput(i,customer)
//read input data and update record for each customer
printf("\nCustomer no. %d\n",i);
printf(" Name: ");
customer(i).name=read(%io(1), 1, 1, '(a)') ;
printf(" Street: ");
customer(i).street=read(%io(1), 1, 1, '(a)') ;
printf(" City: ");
customer(i).city=read(%io(1), 1, 1, '(a)') ;
printf(" Account Number: ");
customer(i).acct_no=scanf("%d") ;
printf(" Previous Balance: ");
customer(i).oldbalance=scanf("%d") ;
printf(" Current Payment: ");
customer(i).payment=scanf("%d") ;
printf(" Payment date (mm/dd/yyyy):\n ");
printf("Month: ");
customer(i).lastpayment.month=scanf("%d");
printf("Day: ");
customer(i).lastpayment.day=scanf("%d") ;
printf("Year: ");
customer(i).lastpayment.year=scanf("%d") ;
return customer;
endfunction
function[] = writeoutput(i,customer)
printf("\nName: ");
write(%io(2),customer(i).name);
printf("Account number: %d\n", customer(i).acct_no);
printf("Street: ");
write(%io(2),customer(i).street);
printf("City: ");
write(%io(2),customer(i).city);
printf("Old balance: %7.2f", customer(i).oldbalance);
printf(" Current payment: %7.2f", customer(i).payment);
printf(" New balance: %7.2f\n\n", customer(i).newbalance);
printf("Account status: ");
select customer(i).acct_type
case 'C' then
printf("CURRENT\n\n");
case 'D' then
printf("DELINQUENT\n\n");
case 'O' then
printf("OVERDUE\n\n");
else
printf("ERROR\n\n");
end
return;
endfunction
//calling main()
funcprot(0);
main();
|
