// // Arduino Code // // // CalcAreaOfCircle // function so that it computes and returns the  // area of a circle given the radius

Subject:Computer SciencePrice: Bought3

Share With

//

// Arduino Code

//

//

// CalcAreaOfCircle

// function so that it computes and returns the  // area of a circle given the radius.

// Hint: look up how to do exponentiation in Arduino C.

// Hint: look up how to represent Pi in Arduino C (no it is not // 22/7).

//

float CalcAreaOfCircle(float Radius) {

float Answer = ...

return (Answer);

}

//

// CalcFactorial

// function so that it returns the factorial of  // Value.

// Hint: look up what a factorial is if you don't remember.

// Hint: look up what an "edge case" means.

// Hint: look at the preceding function for how to return a   // value.

// Hint: look up how a while loop works.

//

unsigned int CalcFactorial(unsigned int Value) {

// Test for edge case where Value is at or below zero. If so,

// return zero.

if (Value <= 0) ...

// Ok, we know Value is at least one so we can start multiplying // factors. an unsigned int variable called Answer and  // set its initial value to 1.

...

// Keep going as long as Value is greater than zero and keep    // multiplying factors. Use a

// while loop to keep repeating this step until Value hits zero.

while (Value > 0) {

// Multiply Answer times Value and place the result in Answer.

...

// Subtract one from Value and place the result in Value.

...

}

// Return final result.

return (Answer);

}

//

// CalcSlopeAndIntercept

// function so it calculates the slope and       // intercept of a line based on two points.

// Notice that it uses pass-by-reference variables for Slope and // Intercept.

// Hint: review "pass by reference" to ensure you understand how // it works.

// Hint: look up what it means to return "void" from a function.

// Hint: look up how to calculate the absolute value of a number // in Arduino C.

//

void CalcSlopeAndIntercept(float X1, float Y1, float X2, float Y2, float &Slope, float &Intercept) {

// Set the Slope and Intercept return parameters to zero before // we anything else.

Slope = ...

Intercept = ...

// Test for edge case where X2-X1 is zero (slope is undefined, // line is vertical). If we detect

// this edge case, just return immediately. Remember we are not // supposed to compare floating point values (conversion       // errors). Instead, calculate the absolute value of the //difference

// between X2 and X1, and test if it is "close" to zero.

float Difference = ...

if (Difference < 0.00001) return;

// Ok, we know we have a non-zero run, so let's calculate it, along with rise.

float Rise = ...

float Run = ...

// Slope is rise over run.

Slope = ...

// Intercept is y - mx, using (X1, Y1) for (x, y).

Intercept = ...

// We don't need to return anything here, since we've been using pass-by-reference variables

// for Slope and Intercept. So we're done!

}

// -------------------------------------------------------------// -------------------------------------------------------------

// Don't change anything after this point. It's the usual Arduino setup() and loop() functions

// but with some test code added.

//

//

// setup()

//

void setup()

{

Serial.begin(9600);

Serial.println("Arduino Code Practice 1");

Serial.print("Area of circle with radius 5 = ");

Serial.println(CalcAreaOfCircle(5));

Serial.print("Factorial of 5 = ");

Serial.println(CalcFactorial(5));

float Slope;

float Intercept;

Serial.print("Line through (1.5, 2.75) and (3.65, 9.25) has slope, intercept = ");

CalcSlopeAndIntercept(1.5, 2.75, 3.65, 9.25, Slope, Intercept);

Serial.print(Slope); Serial.print(", "); Serial.println(Intercept);

Serial.println();

}

//

// loop()

//

void loop()

{ }

 

 I need help solving this code.