cppArrResize

#include <iostream>

template <typename T>
void printArr(T* begin, T* end)
{
	while (begin != end)
	{
		std::cout << *begin++ << ' ';
	}
	std::cout << '\n';
}


int main()
{
	int arrSize{ 10 };
	int* arrSrc{ new int[10]{1,2,3,4,5,6,7,8,9,10} };

	//1,2,3,4,5,6,7,8,9,10
	//1,2,3,4,5,[42],6,7,8,9,10
	// arrSize == 11

	printArr(arrSrc, arrSrc + arrSize);

	auto newArr{ new int[++arrSize] };
	for (int i{ 0 }; i < arrSize - 1; ++i)
	{
		newArr[i] = arrSrc[i];
	}
	newArr[arrSize - 1] = 11;

	//delete[] arrSrc;
	arrSrc = newArr;

	printArr(arrSrc, arrSrc + arrSize);

	newArr = new int[--arrSize];
	for (int i{ 0 }; i < arrSize; ++i)
	{
		newArr[i] = arrSrc[i];
	}
	//delete[] arrSrc;
	arrSrc = newArr;

	printArr(arrSrc, arrSrc + arrSize);

	delete[] arrSrc;
	return 0;
}