g*********s
发帖数: 1782 | 1 is the output undefined? how to initialize this array?
const double* pc = new double[10];
cout << (*pc) << endl; |
a***y
发帖数: 2803 | 2 为什么要const? 没见过这么搞的.
【在 g*********s 的大作中提到】
: is the output undefined? how to initialize this array?
: const double* pc = new double[10];
: cout << (*pc) << endl;
|
G****A
发帖数: 4160 | 3 Suppose the default value is 0.
there are two ways (as far as I know) to handle that:
1. const double* pc = new double [SIZE]();
2. std::vector vec(SIZE, 0); --if a vector is working for your
case.
【在 g*********s 的大作中提到】
: is the output undefined? how to initialize this array?
: const double* pc = new double[10];
: cout << (*pc) << endl;
|
t****t
发帖数: 6806 | 4 as far as i know, the first is not a valid c++ statement.
【在 G****A 的大作中提到】
: Suppose the default value is 0.
: there are two ways (as far as I know) to handle that:
: 1. const double* pc = new double [SIZE]();
: 2. std::vector vec(SIZE, 0); --if a vector is working for your
: case.
|
G****A
发帖数: 4160 | |
t****t
发帖数: 6806 | 6 great! i learned something. thanks for pointing it out.
【在 G****A 的大作中提到】
: I learned this trick from the following source:
: http://stackoverflow.com/questions/2204176/how-to-initialise-me
|
