DYNAMIC 2D ARRAYS A double pointer is used for declaring two dimensional arrays dynamically. For example int *p: prnew int [rows]; for (int i-0: ikrows: i++) p[i]-new int [cols]: We want to implement a triangular 2D array in which each row has one column greater than the previous one. i.e, the first row has one column, the second one has two columms, and the third one nas three columns and soon u have Following is an example of a triangular 2D array with four rows int **T2D fe afe Write following functions with given prototype: a. void AddColumns (int, int si This function takes a single pointer by reference and dynamically allocates memory to it. You will call this function in main to allocate number of columns to each row turm by turn. int main( )f int **p; p-newint *[rows]: for (int 1-0; ;>