program

[bhanusharma]

hi, i am getting two error. i have three separate files throttle.h, throttle.cpp, usingthrottle.c pp

--------------------Configuration: usingthrottle - Win32 Debug--------------------
Compiling...
throttle.cpp
C:\cd250\thrott le.cpp(45) : error C2065: 'top_postion' : undeclared identifier
C:\cd250\thrott le.cpp(54) : error C2447: missing function header (old-style formal list?)
Error executing cl.exe.

//FILE: throttle.h
//CLASS HEADER FILE of throttle

class throttle
{
public:
	// CONSTRUCTOR & DESTRUCTOR
	throttle();
	//fill in precondition and postcondition

throttle(int size);
	// Precondition:  size > 0;
// Postcondition: Throttle has size positions above the shutoff position, and its current position is off.


	// MODIFICATION MEMBER FUNCTIONS
	void shut_off();
	//fill in precondition and postcondition

void shift(int amount);
	// Precondition: None
// Postcondition: Throttle’s position is moved by amount (but not below 0 or above top position).  
// If amount would move throttle beyond 0, set to 0.  If amount would move throttle beyond top position, 
// set throttle to top position.

	// CONSTANT MEMBER FUNCTIONS
	bool is_on() const;
// Precondition: None
// Postcondition: false if position is zero, true otherwise

private:
	int top_position;
	int position;
};

// FILE: throttle.cpp
// CLASS IMPLEMENTION FILE of throttle

#include "throttle.h"
#include <cassert> 
throttle::throttle()
//fill in precondition and postcondition

//precondition: none
//postcondition: 
{
	top_position = 1;
	position = 0;
}

throttle::throttle(int size)
// Precondition:  size > 0;
// Postcondition: Throttle has size positions above the shutoff position, and its current position is off.
{
	//fill in correct code

assert(size > 0);
top_position = size;
position = 0;

}

void throttle::shut_off()
//fill in precondition and postcondition
//precondition: none
//postcondition: the throttle has been turned off.
{
	position = 0;
}

void throttle::shift(int amount)
// Precondition: None
// Postcondition: Throttle’s position is moved by amount (but not below 0 or above top position).  If amount would move throttle beyond 0, set to 0.  If amount would move throttle beyond top position, set throttle to top position.
{
	// fill in correct code
position += amount;
if (position <0 )
   position = 0;
else if (position > top_position)
position = top_postion;



}

bool throttle::is_on() const;
// Precondition: None
// Postcondition: false if position is zero, true otherwise
{
	

return (postion > 0);
}

#include "throttle.h"
#include <iostream>
using namespace std;
//creates two throttles and shifts the second throttle an inputted amount.
void main(){
	throttle t1;
	int value;
	cout << "Type in a throttle size." << endl;
	cin >> value;
	throttle t2(value);
	cout<< "Type in a shift amount" << endl;
cin >> value;
	t2.shift(value);
	if (t2.is_on())
		cout << "Throttle on" << endl;
	else
		cout << "Throttle off" << endl;	
}

[bhanusharma]

I got it first one.

[bhanusharma]

now i am getting an error.
C:\cd250\thrott le.cpp(54) : error C2447: missing function header (old-style formal list?)

throttle::throt tle()

{
top_position = 1;
position = 0;
}

i did not understand this part too.

[bhanusharma]

please help meeeeeeeee

[Banfa]

bool throttle::is_on() const[b];[/b]
// Precondition: None
// Postcondition: false if position is zero, true otherwise
{
	

return (postion > 0);
}

You have a ; after the function header.

You have also misspelled position in a couple of places leaving out the first i.


It is not 100% clear if this is a coursework question or not, however if it is then you should not have posted the full source of your program. Please read the Posting Guidelines

[bhanusharma]

Thank u .I got it