How to Write a Program to Calculate Compound Interest. A brief program can quickly calculate compound interest. Stockbyte/Stockbyte/Getty Images. Whether it’s figuring the mortgage on commercial property or the rate on a short- term loan, compound interest calculations are a basic computation for business owners. If your business deals with compound interest figures often, a macro program written in a language such as Visual Basic for Applications, used in Excel and other Microsoft Office programs, makes the calculation process fast, painless and reliable. The key to calculating compound interest lies in the exponential function, which raises a number to a power. The exponential function combines the term and interest rate, the result of which you multiply by the principal amount, yielding a monthly payment or total loan cost. Step 1. Click the “Start” button. Choose “All Programs,” then “Microsoft Office” and then click “Microsoft Excel.”Step 2. Press the “Alt- F1. C++ Program --To calculate the compound interest using. C program To convert Infix To Post Fix By using. Excel’s macro editor. Press “F7” to open a text window into which you type a program. Step 3. Click the “Yes” button when Visual Studio displays the dialog box, “The current solution will be closed. Save changes to the following items?” Visual Studio displays a new screen; the center of the screen shows your new project as an empty window called a form. Double- click inside the window. Visual Studio opens the form’s code screen. It contains two lines of code, the first which is “Public Class Form. End Class.”Step 4. Create the code to calculate the compound interest. Microsoft offers this formula as an example of macro programming. The variable PV stands for present value, R is annual interest rate and N is the loan term as a number of years. The second line of the program calculates the total loan amount by adding one to the percentage rate, raising that number to a power representing the number of years and multiplying the result by the present value: Function Yearly. For example, use a $1. Enter the following data into cells A1, A2 and A3 on the open Excel worksheet: 1. Step 7. Type the following formula into any empty cell in the worksheet: =Yearly. Barett has a Bachelor of Science in physics from Northeastern Illinois University and has been writing since 1. He has contributed to . He also contributed to the book. Create a Function Macro to Determine Compound Interest Microsoft provides programming examples for illustration only. Some key features of Free Compound Interest Calculator are: Compound and regular interest calculation. Graphical result window for better understanding.
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