Couldnt be initialized~

I found I couldnt initialize the variables in class, is it a rule ?

it is so bad if so~:rolleyes:

Quote:

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Originally posted by black
I found I couldnt initialize the variables in class, is it a rule ?

it is so bad if so~:rolleyes:

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i've never written one line of c++ in my life, but couldnt you initialize them in the constructor?

Quote:

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Originally posted by moi
i've never written one line of c++ in my life, but couldnt you initialize them in the constructor?

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huh ? a yes, I almost forgot we have constructor at all~ :p thanx~

and anyone knows how to initialize this array ?


int *p;
p=new int[5];
p[0]=5;


I tried p=new int[5]{1,2,3,4,5} but failed~ :(

Code:

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int* p= new int[5];
if(p)
{
      for(int i=0;i<5;i++) *p=i;
}
// do **** with p[] then
delete [] p;

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Quote:

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Originally posted by Stoned_Coder

Code:

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int* p= new int[5];
if(p)
{
      for(int i=0;i<5;i++) *p=i;
}
// do **** with p[] then
delete [] p;

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thanx but what is that if(p) ? :rolleyes:

The standard says that if new fails then an exception of type std::bad_alloc is thrown unless the nothrow version of new is used.If your compiler supports exceptions properly and throws when new fails then this test is meaningless. On some current compilers though the default behaviour of new is to return 0 if memory could not be allocated.So the if statement just checks that new succeeded.I probably should have left it out as new failing would only happen in cases of memory exhaustion but it just shows that you shouldnt take anything for granted.