dsims wrote:
HI everyone, I am just starting to learn C++, I started with learning
php and have found that some of the syntax is similar.
It may be similar, but beware of the numerous subtle differences.
In C++ from what I have read is that you have to list
the size of your arrays before you fill them.
Arrays in C++ are not at all like those in PHP. Don't let the fact that
the word "array" is used in both languages confuse you.
In C++, arrays are a very low-level (and broken) language structure
which you should hardly ever use. There are container classes which you
should use instead. Unlike PHP, which has those built-in arrays that try
to serve all kinds of different purposes at the same time, C++ offers
container classes for solutions to particular problems.
For example, look at std::vector, std::set and std::map.
http://www.parashift.com/c++-faq-lite/containers.html
Here's a simple example:
#include <vector>
#include <iostream>
int main()
{
std::vector<intnumbers;
numbers.push_back(123);
numbers.push_back(456);
numbers.push_back(789);
for (std::vector<int>::const_iterator iter = numbers.begin();
iter != numbers.end(); ++iter)
{
std::cout << *iter << "\n";
}
}
Even if you use arrays, you don't have to know their size beforehand if
you allocate them dynamically. However, that should not even bother you.
Just use the standard container classes and you'll be fine.
--
Christian Hackl
