Array Of Class Objects

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February 26th, 2010, 01:38 PM

akhyls

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Array Of Class Objects

how can we create array of class objects, send them to the function?

February 26th, 2010, 01:50 PM

Oler1s

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Replace "class objects" with "integers" and answer that question. Now, can you answer your own question?

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February 26th, 2010, 02:03 PM

akhyls

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Quote:

Originally Posted by Oler1s

Replace "class objects" with "integers" and answer that question. Now, can you answer your own question?

if there is a class called Car
can we say

Car c[4];
and when we want to sent the array to a function sholud we say

function( c[4] )?
And when we want to send the only the fourth object of the array should we say
function( c[4] )

how do we distinguish them. i am very confused

February 26th, 2010, 03:22 PM

nattylife

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Quote:

Originally Posted by akhyls

first thing first, what language are you using?

for above, lets say there are 2 functions, one that needs the full array of cars and the other just takes a single car (im doing this in c++)

Code:

void OperateOnArray( Car c[], int array_length );
void OperateOnOneCar( Car single_car);

Car car_array[] = {Car("ford"), Car("nissan")};

OperateOnArray(car_array, 2);
OperateOnOneCar(car_array[1]);

make sense?

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February 28th, 2010, 10:04 AM

akhyls

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Quote:

Originally Posted by nattylife

first thing first, what language are you using?

for above, lets say there are 2 functions, one that needs the full array of cars and the other just takes a single car (im doing this in c++)

Code:

void OperateOnArray( Car c[], int array_length );
void OperateOnOneCar( Car single_car);

Car car_array[] = {Car("ford"), Car("nissan")};

OperateOnArray(car_array, 2);
OperateOnOneCar(car_array[1]);

make sense?

yes i understand thanks for help

February 28th, 2010, 03:36 PM

jwdonahue

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Actually, OperatOnOneCar() is redundant. You can call OperateOnArray( &car_array[1], 1 ) instead. In C++ it would you can also use function overloading and have something along the lines of:

Code:

void OperateOnCar( Car &single_car ) ;
void OperateOnCar( Car *c, size_t items ) ;
void OperateOnCar( std::vector<Car> &rvec ) ;

Car car_array[] = { Car("Ford"), Car("Nissan") } ;
std::vector<Car> car_vec( car_array, car_array + 1 ) ;

OperateOnCar( car_array, 2 ) ;
OperateOnCar( car_array[1] ) ;
OperateOnCar( car_vec ) ;

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Array Of Class Objects

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