help please?

[boulton1991]

im making an elevator for my HNC project but im useless at C programming, ive done some of the code and which way i want it to work, any help on functions or how to do this would be great.
i want the elevator to be either an up elevator which only goes to the floors above the current, any floors below get added to a queue until a down elevator, and vice versa.

const int MAX = 5
int data [MAX} = {0,1,2,3,4};


// too many people in lift override stop motor and  sound alarm
void Liftcontrol
	if (weight = 1)
	{
		motor = 0;
		alarm =1;
       }
else
{
	Liftcontrol()
	{
		if(elevator = 1 //up elevator
			{
				if( input > current)
					{ 
					do
					output to motor1 =1 for (input - current) seconds
				       }
 				if(input< current)
					{
					do
					ADD input to queue until down elevator
				       }
		       }
		if (elevator = 0 //down elevator
			{
				if( input < current)
					{ 
					do
					output to motor2 =1 for (current - input) seconds
				       }
 				if(input > current)
					{
					do
					ADD input to queue until up elevator
				       } 
                    }
	}

[boulton1991]

as you can see i really have no idea haha so any help we would brilliant, the notes college gave me are a bubble sort programme, a 7 segment display , an averaging programme and to toggle an LED?

[Adak]

Are you working with an embedded system, or a regular PC?

[boulton1991]

im going to be using a 89s2051 controller if this is any help?

[Salem]

> the notes college gave me are a bubble sort programme, a 7 segment display , an averaging programme and to toggle an LED?
Have you studied these in detail?

Have you tried to load them onto your micro-controller. Running the "toggle a LED" program is a really good idea if you haven't done so already. It will tell you a lot about the process of getting your code from your PC onto your hardware.

So do you have a wired up circuit containing several switches, an electric motor and maybe some 7-segment displays to display the current floor?
What about door sensors (open or closed), or sensors to tell you which floor the lift is at?

Start collecting a number of simple routines together which achieve very specific steps, such as
- start the motor winding up
- start the motor winding down
- stop the motor
- display a number on the 7-seg display
- using the 7-seg function, display a number corresponding to the selected lift call switch
- using the 7-seg function, display a number corresponding to the selected lift door sensor
- using the 7-seg function, display a number corresponding to the lift level sensor

> im making an elevator for my HNC project but im useless at C programming
How long have you got?
First stop would be to go through C Tutorial - Learn C - Cprogramming.com, at least the "Introduction and Basic C Features" and some of "Pointers, Arrays and Strings" sections to at least familiarise yourself a little bit, and have a go at writing small bits of C code which are syntactically valid.

To be honest, given the C you've posted so far, this is a really tough assignment.

[boulton1991]

Yeah I'm gonna be using switches for the inputs, led to display the current floor and a motor to simulate, no door or limit switches, it is pretty hard haha and it's due in a months time include the completed built rig, i haven't programmed anything yet just written some code as the college doesn't have that much available, I'll have a read through what you showed me and hopefully get to grasps with it this week haha