Double Dimension Array

Double_Dimension_Array_Class.cpp

// # define NDEBUG 
# include <assert.h> 

class array2D{
	int rows,cols.**arr;
public:
	// array2D():array2D(0,0,0){}
	array2D(int r,int c,int val):rows(r),cols(c),arr(nullptr){
		arr = new int *[rows];

		for (int i = 0; i < rows; ++i)
			arr[i] = new int[cols];

		// memset(arr,0,rows*cols);
		for(int i = 0; i < rows; ++i){
			for(int j = 0; j < cols; ++j){
				arr[i][j] = val;	
			}
		}
	}

	int operator()(const int i,const int j){
		assert(i < rows && i >= 0 && j < cols && j >= 0);
		return (arr[i][j]);
	}

	~array2D(){
		for(int i=0;i<rows;i++){ 
			delete [] arr[i]; 
		}
 		delete [] arr;
	}
};

int main(){
	{
		array2D arr1(100,100,23);
		int a = arr1(99,99);
		assert(a==23);
	}

}