>Example: Mortgage Calculator
This is a mortgage calculator, handy if you're looking to
get a loan or refinance an existing one:
println("Mortgage amount:");
mortgage = readln();
println("Mortgage term in years:");
years = readln();
println("Mortgage interest rate:");
rate = readln();
// Convert to monthly interest rate
rate = Math.pow(1 + (rate / 100), 1 / 12) - 1;
months = years * 12;
// Compute total amount to be paid / mortgage
t = Math.pow(1 + rate, months);
if (t == 1)
payment = mortgage / months;
else
payment= (mortgage * t * rate) / (t - 1);
// Round to penny
payment = Math.round(payment * 100) / 100;
println("Monthly payment is " + payment);
It demonstrates how to use the
readln and
println
extensions
in the DMDScript console script engine. To run, save the
script text above in the file
mortgage.ds, and run
with the command:
C:\dmdscript>ds mortgage.ds
Digital Mars DMDScript 1.03
www.digitalmars.com
Compiled by Digital Mars DMD D compiler
Copyright (c) 1999-2005 by Digital Mars
written by Walter Bright
1 source files
Mortgage amount:
100000
Mortgage term in years:
30
Mortgage interest rate:
6
Monthly payment is 589.37
C:\dmdscript>
