Quick Calculator - source code for the entire program

Quick Calulator is compact and very convenient software. In addition to performing common mathematical operations, the software also has the ability to calculate with fractions, polynomials, solve equations, systems of equations, calculate with large integers, work with prime numbers, etc. . Like many other popular programs, Quick Calculator displays a simple formula bar that allows you to directly enter expressions to calculate:

When run, Quick Calculator appears as a permanent icon on the taskbar. You can set the program to automatically load each time you start Windows.

Quick Calculator has an always on top function, helping the calculation window always appear when working with other programs.

You can enable or disable this function by clicking the button on the calculation window, or through the options setting window.

The software has 4 main features:

Conventional calculations
Allows calculation with fractions (using "~" sign), calculating trigonometric functions (sin, cos, tan, .), mathematical functions (exp, ln, .), max functions , min, . and functions such as USCLN, BSCNN, mod operations (take the balance), factor commands (to analyze prime factors) for arithmetic

Alternatively, you can use variables (in words) instead of numbers, like pi (= 3.14159265358979), e (= 2.71828182845905), and optional variables like X, Y, Z, T, etc. There is also an ANS, M memory similar to a CASIO computer.

Calculate with large integers
Allows calculation and processing with large integers.

Because there is no good algorithm, the speed of operations is not fast (only up to 3000!), The division is relatively slow. In addition, we can also perform the root, square root and Max, Min, USCLN, BSCNN functions with large integers. In particular, the program also allows expressing the decimal digits of pi and e numbers (up to thousands of digits) (^_^)

Calculate with polynomials

Allows addition and subtraction to divide polynomials

Solve the equation

Lets solve the quadratic equation, first order equation system

In addition, the program also has the function of tabulating prime numbers from 2 to n

Quick Calculator is a good tool and very useful for calculating on computers. Besides, the program is also written with the purpose of cultivating and sharing programming skills. The source code of the program is provided free of charge, clearly presented, and the content is easy to understand, which will certainly be helpful in your programming learning.

The software was written in Microsoft Visual Basic 6.0, version 1.01 was completed in April 2003.