Resizable Arrays

[dms]

Hi,

Is there another, more friendly way to create resizable arrays without
using the realloc function?

Thanks

David Sharp

[Peter van Merkerk]

Re: Resizable Arrays

> Is there another, more friendly way to create resizable arrays without[color=blue]
> using the realloc function?[/color]

Take a look at the std::vector class in the standard library. This class
is an excellent replacement for C-style arrays in most cases.

--
Peter van Merkerk
peter.van.merke rk(at)dse.nl

[dms]

Re: Resizable Arrays

Hi,

Thanks for the quick reply. Can you please give me an example of usage?

Thanks

David Sharp

Peter van Merkerk wrote:[color=blue][color=green]
>>Is there another, more friendly way to create resizable arrays without
>>using the realloc function?[/color]
>
>
> Take a look at the std::vector class in the standard library. This class
> is an excellent replacement for C-style arrays in most cases.
>
> --
> Peter van Merkerk
> peter.van.merke rk(at)dse.nl
>
>[/color]

[Peter van Merkerk]

Re: Resizable Arrays

> Thanks for the quick reply. Can you please give me an example of
usage?

#include <iostream>
#include <vector>

using namespace std;

int main()
{
vector<int> v(3); // Create vector with 3 default constructed
elements.

v[0] = 100;
v[1] = 200;
v[2] = v[1] + v[0];

v.push_back(123 ); // Add one element to the v, v now has 4 elements.
v.push_back(321 ); // Add one element to the v, v now has 5 elements.

v.resize(10); // Resize v to 10 elements
v[9] = 12345; // Set value of last element of v

// Dump contents of v
for(int i=0; i < v.size(); ++i)
{
cout << "v[" << i << "] = " << v[i] << endl;
}
return 0;
}


HTH

--
Peter van Merkerk
peter.van.merke rk(at)dse.nl

[dms]

Re: Resizable Arrays

That's great! Thanks.

Peter van Merkerk wrote:[color=blue][color=green]
>>Thanks for the quick reply. Can you please give me an example of[/color]
>
> usage?
>
> #include <iostream>
> #include <vector>
>
> using namespace std;
>
> int main()
> {
> vector<int> v(3); // Create vector with 3 default constructed
> elements.
>
> v[0] = 100;
> v[1] = 200;
> v[2] = v[1] + v[0];
>
> v.push_back(123 ); // Add one element to the v, v now has 4 elements.
> v.push_back(321 ); // Add one element to the v, v now has 5 elements.
>
> v.resize(10); // Resize v to 10 elements
> v[9] = 12345; // Set value of last element of v
>
> // Dump contents of v
> for(int i=0; i < v.size(); ++i)
> {
> cout << "v[" << i << "] = " << v[i] << endl;
> }
> return 0;
> }
>
>
> HTH
>
> --
> Peter van Merkerk
> peter.van.merke rk(at)dse.nl
>
>
>[/color]