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### #ActualBrother Bob

Posted 22 July 2013 - 12:17 PM

A function can perform calculations and adjust variables within itself and not accept any input or return any value such as in the first example.

A function can receive information, perform calculations on this input but still not return any information as in the second example.

A function can receive information, perform calculations on this information and also send information back when it is used as in the third example.

//======================================================================================================================

float finalValue = 0.0;   //Global variable, some compilers may complain that this is actually a double since the 'f' is omitted, i.e. 0.0f

//A double takes up twice as much memory space but also has more precision.

void calculateValue(void)   //This function definition has two 'voids' because nothing goes in and nothing comes out, it modifies the variable directly

{

finalValue = 10.0 * 2.0;

}

void RenderLoop(void)

{

if(20.0 == finalValue)   //Here, finalValue is still 0.0 as defined at the beginning, this conditional will fail, you will not be able to eat pizza.

{

eatPizza = true;

}

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

calculateValue();   //Now when this function is called in the render loop, finalValue is modified to have a value of 20.0

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

if(20.0 == finalValue)   //Here, finalValue is now 20.0, you will finally be able to eat pizza

{

eatPizza = true;

}

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//======================================================================================================================

float numberOfBottlesOfRootbeer = 0.0;

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

//The following function has two inputs where the previous one had void, this means we will be giving the function information necessary for its calculations

{

//if we have $20.00, and the Root Beer costs$2.00 per bottle then numberOfBottlesOfRootbeer will be set to 10.0 when it's called in the RenderLoop() function

numberOfBottlesOfRootbeer = amountOfMoneyAvailable / costOfRootBeer;

}

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

void RenderLoop(void)

{

//Before we call the function, the value of numberOfBottlesOfRootbeer is still 0.0.

HowMuchRootbeerToBuy(2.0, 20.0);   //Here we both call the function, and input the values for its calculations

//Now that we've called the function HowMuchRootbeerToBuy, the value of numberOfBottlesOfRootbeer is 10.0.

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//======================================================================================================================

int starTrekEpisodeSelection = 0;

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

int SelectEpisodeToWatch(int lastEpisodeWatched) //This function is set to return an integer.

{

int incrementEpisodeWatched;

incrementEpisodeWatched = lastEpisodeWatched + 1;

return incrementEpisodeWatched;

}

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

void RenderLoop(void)

{

//before the function SelectEpisodeToWatch() is called, the value of starTrekEpisodeSelection is 0.0.

starTrekEpisodeSelection = SelectEpisodeToWatch(15);   //here the return value of the called function is being assigned to starTrekEpisodeSelection

//now starTrekEpisodeSelection integer has a value of 16.

}

### #6marcClintDion

Posted 22 July 2013 - 03:33 AM

There is far too much arrogance and out right abuse by site moderators, they are teaching other people to behave this way.  The posts I've made will all be shorty removed and replaced with this notice.  Game development is not the only thing being taught here, bad behavior is being taught as well.

### #5marcClintDion

Posted 23 June 2013 - 03:34 AM

A function can perform calculations and adjust variables within itself and not accept any input or return any value such as in the first example.

A function can receive information, perform calculations on this input but still not return any information as in the second example.

A function can receive information, perform calculations on this information and also send information back when it is used as in the third example.

//======================================================================================================================

float finalValue = 0.0;              //Global variable, some compilers may complain that this is actually a double since the 'f' is omitted, i.e. 0.0f

//A double takes up twice as much memory space but also has more precision.

void calculateValue(void)        //This function definition has two 'voids' because nothing goes in and nothing comes out, it modifies the variable directly

{

finalValue = 10.0 * 2.0;

}

void RenderLoop(void)

{

if(20.0 == finalValue)        //Here, finalValue is still 0.0 as defined at the beginning, this conditional will fail, you will not be able to eat pizza.

{

eatPizza = true;

}

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

calculateValue();              //Now when this function is called in the render loop, finalValue is modified to have a value of 20.0

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

if(20.0 == finalValue)        //Here, finalValue is now 20.0, you will finally be able to eat pizza

{

eatPizza = true;

}

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//======================================================================================================================

float numberOfBottlesOfRootbeer = 0.0;

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

//The following function has two inputs where the previous one had void, this means we will be giving the function information necessary for its calculations

{

//if we have $20.00, and the Root Beer costs$2.00 per bottle then numberOfBottlesOfRootbeer will be set to 10.0 when it's called in the RenderLoop() function

numberOfBottlesOfRootbeer = amountOfMoneyAvailable / costOfRootBeer;

}

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

void RenderLoop(void)

{

//Before we call the function, the value of numberOfBottlesOfRootbeer is still 0.0.

HowMuchRootbeerToBuy(2.0, 20.0);        //Here we both call the function, and input the values for its calculations

//Now that we've called the function HowMuchRootbeerToBuy, the value of numberOfBottlesOfRootbeer is 10.0.

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//======================================================================================================================

int starTrekEpisodeSelection = 0;

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

int SelectEpisodeToWatch(int lastEpisodeWatched) //This function is set to return an integer.

{

int incrementEpisodeWatched;

incrementEpisodeWatched = lastEpisodeWatched + 1;

return incrementEpisodeWatched;

}

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

void RenderLoop(void)

{

//before the function SelectEpisodeToWatch() is called, the value of starTrekEpisodeSelection is 0.0.

starTrekEpisodeSelection = SelectEpisodeToWatch(15);        //here the return value of the called function is being assigned to starTrekEpisodeSelection

//now starTrekEpisodeSelection integer has a value of 16.

}

### #4marcClintDion

Posted 23 June 2013 - 03:33 AM

A function can perform calculations and adjust variables within itself and not accept any input or return any value such as in the first example.

A function can receive information, perform calculations on this input but still not return any information as in the second example.

A function can receive information, perform calculations on this information and also send information back when it is used as in the third example.

//======================================================================================================================

float finalValue = 0.0;              //Global variable, some compilers may complain that this is actually a double since the 'f' is omitted, i.e. 0.0f

//A double takes up twice as much memory space but also has more precision.

void calculateValue(void)        //This function definition has two 'voids' because nothing goes in and nothing comes out, it modifies the variable directly

{

finalValue = 10.0 * 2.0;

}

void RenderLoop(void)

{

if(20.0 == finalValue)        //Here, finalValue is still 0.0 as defined at the beginning, this conditional will fail, you will not be able to eat pizza.

{

eatPizza = true;

}

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

calculateValue();              //Now when this function is called in the render loop, finalValue is modified to have a value of 20.0

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

if(20.0 == finalValue)        //Here, finalValue is now 20.0, you will finally be able to eat pizza

{

eatPizza = true;

}

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//======================================================================================================================

float numberOfBottlesOfRootbeer = 0.0;

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

//The following function has two inputs where the previous one had void, this means we will be giving the function information necessary for its calculations

{

//if we have $20.00, and the Root Beer costs$2.00 per bottle then numberOfBottlesOfRootbeer will be set to 10.0 when it's called in the RenderLoop() function

numberOfBottlesOfRootbeer = amountOfMoneyAvailable / costOfRootBeer;

}

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

void RenderLoop(void)

{

//Before we call the function, the value of numberOfBottlesOfRootbeer is still 0.0.

HowMuchRootbeerToBuy(2.0, 20.0);        //Here we both call the function, and input the values for its calculations

//Now that we've called the function HowMuchRootbeerToBuy, the value of numberOfBottlesOfRootbeer is 10.0.

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//======================================================================================================================

int starTrekEpisodeSelection = 0.0;

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

int SelectEpisodeToWatch(int lastEpisodeWatched) //This function is set to return an integer.

{

int incrementEpisodeWatched;

incrementEpisodeWatched = lastEpisodeWatched + 1;

return incrementEpisodeWatched;

}

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

void RenderLoop(void)

{

//before the function SelectEpisodeToWatch() is called, the value of starTrekEpisodeSelection is 0.0.

starTrekEpisodeSelection = SelectEpisodeToWatch(15);        //here the return value of the called function is being assigned to starTrekEpisodeSelection

//now starTrekEpisodeSelection integer has a value of 16.

}

### #3marcClintDion

Posted 23 June 2013 - 03:32 AM

A function can perform calculations and adjust variables within itself and not accept any input or return any value such as in the first example.

A function can receive information, perform calculations on this input but still not return any information as in the second example.

A function can receive information, perform calculations on this information and also send information back when it is used as in the third example.

//======================================================================================================================

float finalValue = 0.0;              //Global variable, some compilers may complain that this is actually a double since the 'f' is omitted, i.e. 0.0f

//A double takes up twice as much memory space but also has more precision.

void calculateValue(void)        //This function definition has two 'voids' because nothing goes in and nothing comes out, it modifies the variable directly

{

finalValue = 10.0 * 2.0;

}

void RenderLoop(void)

{

if(20.0 == finalValue)        //Here, finalValue is still 0.0 as defined at the beginning, this conditional will fail, you will not be able to eat pizza.

{

eatPizza = true;

}

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

calculateValue();              //Now when this function is called in the render loop, finalValue is modified to have a value of 20.0

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

if(20.0 == finalValue)        //Here, finalValue is now 20.0, you will finally be able to eat pizza

{

eatPizza = true;

}

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//======================================================================================================================

float numberOfBottlesOfRootbeer = 0.0;

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

//The following function has two inputs where the previous one had void, this means we will be giving the function information necessary for its calculations

{

//if we have $20.00, and the Root Beer costs$2.00 per bottle then numberOfBottlesOfRootbeer will be set to 10.0 when it's called in the RenderLoop() function

numberOfBottlesOfRootbeer = amountOfMoneyAvailable / costOfRootBeer;

}

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

void RenderLoop(void)

{

//Before we call the function, the value of numberOfBottlesOfRootbeer is still 0.0.

HowMuchRootbeerToBuy(2.0, 20.0);        //Here we both call the function, and input the values for its calculations

//Now that we've called the function HowMuchRootbeerToBuy, the value of numberOfBottlesOfRootbeer is 10.0.

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//======================================================================================================================

int starTrekEpisodeSelection = 0.0;

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

int SelectEpisodeToWatch(int lastEpisodeWatched) //This function is set to return an integer.

{

int incrementEpisodeWatched;

incrementEpisodeWatched = lastEpisodeWatched + 1;

return incrementEpisodeWatched;

}

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

void RenderLoop(void)

{

//before the function SelectEpisodeToWatch() is called, the value of starTrekEpisodeSelection is 0.0.

starTrekEpisodeSelection = SelectEpisodeToWatch(15);        //here the return value of the called function is being assigned to starTrekEpisodeSelection

//now starTrekEpisodeSelection integer has a value of 16.

}

### #2marcClintDion

Posted 23 June 2013 - 03:31 AM

A function can perform calculations and adjust variables within itself and not accept any input or return any value such as in the first example.

A function can receive information, perform calculations on this input but still not return any information as in the second example.

A function can receive information, perform calculations on this information and also send information back when it is used as in the third example.

//======================================================================================================================

float finalValue = 0.0;              //Global variable, some compilers may complain that this is actually a double since the 'f' is omitted, i.e. 0.0f

//A double takes up twice as much memory space but also has more precision.

void calculateValue(void)        //This function definition has two 'voids' because nothing goes in and nothing comes out, it modifies the variable directly

{

finalValue = 10.0 * 2.0;

}

void RenderLoop(void)

{

if(20.0 == finalValue)        //Here, finalValue is still 0.0 as defined at the beginning, this conditional will fail, you will not be able to eat pizza.

{

eatPizza = true;

}

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

calculateValue();              //Now when this function is called in the render loop, finalValue is modified to have a value of 20.0

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

if(20.0 == finalValue)        //Here, finalValue is now 20.0, you will finally be able to eat pizza

{

eatPizza = true;

}

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_02_---------------------------------------------------------------------------------------------------

//======================================================================================================================

float numberOfBottlesOfRootbeer = 0.0;

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

//The following function has two inputs where the previous one had void, this means we will be giving the function information necessary for its calculations

{

//if we have $20.00, and the Root Beer costs$2.00 per bottle then numberOfBottlesOfRootbeer will be set to 10.0 when its called in the RenderLoop() function

numberOfBottlesOfRootbeer = amountOfMoneyAvailable / costOfRootBeer;

}

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

void RenderLoop(void)

{

//Before we call the function, the value of numberOfBottlesOfRootbeer is still 0.0.

HowMuchRootbeerToBuy(2.0, 20.0);        //Here we both call the function, and input the values for its calculations

//Now that we've called the function HowMuchRootbeerToBuy, the value of numberOfBottlesOfRootbeer is 10.0.

}

//======================================================================================================================

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//----------------------------------------------------------------------_PART_03_---------------------------------------------------------------------------------------------------

//======================================================================================================================

int starTrekEpisodeSelection = 0.0;

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

int SelectEpisodeToWatch(int lastEpisodeWatched) //This function is set to return an integer.

{

int incrementEpisodeWatched;

incrementEpisodeWatched = lastEpisodeWatched + 1;

return incrementEpisodeWatched;

}

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

void RenderLoop(void)

{

//before the function SelectEpisodeToWatch() is called, the value of starTrekEpisodeSelection is 0.0.

starTrekEpisodeSelection = SelectEpisodeToWatch(15);        //here the return value of the called function is being assigned to starTrekEpisodeSelection

//now starTrekEpisodeSelection integer has a value of 16.

}

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