Variable Video Explanation:
Simplified Variable Reference Sheet:
| Type Name | Keyword | Size (Bytes) | Size (Numerical) | Operations | Conventional interpretation |
|---|---|---|---|---|---|
| Void / Null / None | void | 0 | 0 | None | The idea of nothing in code form. Example: void functionName(/*params*/); |
| Integer | int | 4 Bytes | Max: 2147483647 Min: -2147483648 | *, /, +, -, % | Whole numbers without decimals (like math integers). |
| Floating Point Number | float | 4 Bytes | Max: 3.40282347e+38 Min: 1.17549435e-38 Also: inf, -inf, NaN | *, /, +, -, % | Decimal numbers. VEX brains typically use floats, so doubles are rarely needed. |
| Character | char | 1 Byte | 0 to 255 | *, /, +, -, % | Represents a character using ASCII-like encoding. See Extended ASCII. |
Constant Keyword (const):
Example of the const keywords in a Vex Project!
Source can be found here.
// Structure that stores physical properties about a robot (These don't normally change)struct PhysicalProperties{ // Note: full variable names! //* Physical Size of robot const float drivelength; // In inches const float drivewidth; // In inches //* Useful Physical Information const float trackwidth; // In inches const float tracklength; // In inches //* Important Wheel Characteristics const float gearing; // Scalar const float wheelDiameter; // Diameter of wheel // Total Amount of Motors on Drivetrain const float motorWattage; // Wattage of motors // Theoretical maximum values // (These can be computed from the variables, but are commonly used so it's worth caching them) const float maxVelocity; // Max Velocity of Drivetrain const Angle<Radians> maxAngularVelocity; // Max angular velocity of drivetrain /* Constructor Omitted to Shorten Codeblock */ // This would assign values to the variables inside the struct};static Keyword:
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