Compounding Calculator 5.0 Enhanced Edition

I. Customer needs

Completed requirements:

1. Customer said: Help me develop a compound interest calculation software.

2. If according to simple interest calculation, how much is the principal and interest?

3. If a pension of $3 million is to be raised after 30, the average annual return is 3%, what is the amount of principal that must be invested now?

4. Interest rate is so low, compounding profits are so strong, if take 1 million yuan to buy annual rate of return 10% of the stock, if all smooth, too long, 1 million yuan becomes 2 million yuan?

5. If I want to turn $1 million into $2 million within 10 years, how much should I find the investment tool to help me achieve my goals? If you want to double the principal after 5 years, how much should the rate of return be at least?

6. If the savings of $30,000 are to be invested annually, with a return of 3% per annum, and then a new round of investment in these Benli and annuities, what will the total value of assets be after 30 years? What if we switch to 3000 a month?

New requirements:

1. To pursue benefits and to face unpredictable financial investment risks, "you cannot put eggs in the same basket", so it is necessary to make a portfolio investment.

The above calculations and comparisons can help customers make investment decisions.

Customer: So can you help me to record a different type of investment, and dynamically show the current value of money?

Two. Task assignment

I: responsible for the code to find bugs and and modify the code to check the simplicity of

teammates: main write code, carry out the customer request realization

Three. Pair members

Name: Feng Zifan

Study No.: 201406114214

Blog Park Address: http://www.cnblogs.com/14fzf/

GitHub Address: Https://github.com/fengzf/Ruan

Four. Team Work photos

five. Estimated Time

Estimated time: 4h

Estimated code line: 100

Actual elapsed time: 6h

Actual code line: 200

Six. Results

Seven. Harvesting and sentiment

This feature is difficult to implement, we do not use the high-level Java connection database, simple use of arrays, because the time is more urgent, we will slowly run, and to the challenge of higher difficulty, I read a lot of Java Connection Database blog,

but because the main learning is not Java, learning will be very stressful, I will make full use of the opportunity of teamwork to continuously improve their various aspects of the ability. A good program requires constant improvement and teamwork, and we also need to keep learning. make full use of online knowledge and keep improving.

Compounding Calculator 5.0 Enhanced Edition