As known we could initialize an array like this:
and I got it from my book array could also be operated with class, that should be something like this:PHP Code:int arr[5]={1,2,3,4,5};
it works and...... my question is could we initialize the arry cprogramming in the same line declared ? just as the arr on top.PHP Code:class people{...};
const int amout=5000 //I think we should have almost 5000 guys here, ya~
people cprogramming[amout];
any ideas ?
Never end on learning~
You mean like this? Sorry for my sloppy programming I just through this together to convey the message.
Code:#include <iostream> using namespace std; class CPoint { private: int m_x; int m_y; public: CPoint( ); CPoint( int x, int y ) : m_x( x ), m_y( y ) { } inline void Display( void ) { cout << m_x << endl; cout << m_y << endl; } }; int main( void ) { CPoint PointArray[ ] = { CPoint(1,2), CPoint(2,3) }; PointArray[0].Display(); PointArray[1].Display(); return 0; }
"...the results are undefined, and we all know what "undefined" means: it means it works during development, it works during testing, and it blows up in your most important customers' faces." --Scott Meyers
this line below confused me a little, any explaination please ?
PHP Code:CPoint( int x, int y ) : m_x( x ), m_y( y ) { }
Never end on learning~
I think that you might want to try dynamically allocating the array instead of using static allocation. To dynamically allocate an array you use the 'new' operator.
oh, thanx. I know not much about it, where is my book ? I need it now~~~Originally posted by TK
I think that you might want to try dynamically allocating the array instead of using static allocation. To dynamically allocate an array you use the 'new' operator.
Never end on learning~
Originally posted by black
this line below confused me a little, any explaination please ?
PHP Code:CPoint( int x, int y ) : m_x( x ), m_y( y ) { }
Its a different means of initialising data members, and the only way to initialise const data members. Its equivalent to the code shown below, but is possibly a little bit quicker and more efficient.
Code:CPoint::CPoint( int x, int y ) { m_x = x; //bah!!! Hungarian :( m_y = y; }
I just think that you are asking the question wrong Black. What you want to know is how to determine the size of the array at runtime. That is what you are wondering about.
Code:#include<iostream> #include<algorithm> #include<iomanip> #include<string> #include<vector> using std::cin; using std::cout; int main() { int * pint; int icount; cout << "How many numbers do you want to enter? "; cin >> icount; pint = new int[icount]; int i; for ( i = 0; i < icount; ++i) { cout << "Enter number " << i + 1 << ": "; cin >> pint[i]; } cout << "The numbers you entered are:" << endl; for ( i = 0; i < icount; ++i) { cout << pint[i] << endl; } delete []pint; return 0; }
that should be Dynamic Memory, yes ? I am reading something these days, hope all would be clear soon. thanx, TK~Originally posted by TK
I just think that you are asking the question wrong Black. What you want to know is how to determine the size of the array at runtime. That is what you are wondering about.
