resize 2d vector c++
myVector.resize(row_count, vector<int>(column_count, initialization_value));
//Example1: create a 2D integer vector with 5 rows and 5 columns having "1"
myVector.resize(5, vector<int>(5, 1));
//Ex2
myVector.resize(n);
for (int i = 0; i < n; ++i)
myVector[i].resize(m);how to modify 2d array in function c++
class Array2D
{
private:
int* m_array;
int m_sizeX;
int m_sizeY;
public:
Array2D(int sizeX, int sizeY) : m_sizeX(sizeX), m_sizeY(sizeY)
{
m_array = new int[sizeX*sizeY];
}
~Array2D()
{
delete[] m_array;
}
int & at(int x, int y)
{
return m_array[y*sizeX + x];
}
};Copyright © 2021 Codeinu
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