Question

double **dptr;

dptr = new double*[5];
for (int i = 0; i < 5; i++)
dptr[i] = new double[3];

How many rows and columns will there be in dptr? Also, what would the code look like to Delete all the space allocated for dptr???

Answer 1

dptr = new double*[5];
// creates 5 rows

for (int i = 0; i < 5; i++)
dptr[i] = new double[3];
// creates 5 columns for each row.

// use the free() function to release memory