Arrays in Constructors
| theChameleon (9) | |
Hello, i'd like to write something that fixes the size of an array inside a constructor, instead of fixing the size when declaring the array.
how do i do that?
i have tried...
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class aClass{
int size;
int arr[];
public:
aClass();
};
aClass::aClass(){
size = 10;
arr[size];
for(int i = 0; i < size; i++){
arr[i] = 0; //initialise
}
} |
something like that, but, after running the main prog, a window will pop up telling me that theres an unhandled runtime exception.
is there a way to do wat i did, but get rid of this runtime exception thingie? thanks.
do i have to catch/throw some exception, and if so, what exception and how? im pretty new to this lang, so any help would be much appreciated. |
 Last edited on | |
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| Grey Wolf (637) | |
You could do somthing like this:
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#include <iostream>
class aClass{
int size;
int *arr;
public:
aClass();
~aClass();
};
aClass::aClass()
{
size = 10;
arr = new int[size];
for(int i = 0; i < size; i++)
{
arr[i] = 0; //initialise
}
}
aClass::~aClass()
{
delete[] arr;
}
int main()
{
aClass test;
} |
But you would be better off using a vector |
| Last edited on | |
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| Zaita (1151) | |
"do i have to catch/throw some exception, and if so, what exception and how? im pretty new to this lang, so any help would be much appreciated."
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try {
} catch (exception &ex) {
cout << ex.what() << endl;
} |
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| theChameleon (9) | |
thanks Grey Wolf, for your prompt reply. that really helped in getting rid of that exception thingie.
a vector is not required, in my case, coz the number is fixed and not dynamic, but thanks anyway. |
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