c++ - Swapping two rows in a matrix

Question

I am having a problem in swapping two rows in a matrix that is a 2D-dynamic array. I wanted to know if there is a function to use directly or if there is none I would like to know how to make one. Thanks in advance. Here is how I made the dynamic array:

int **ptrMatrix = new int*[row];
    for (int i = 0; i < row; i++)
        ptrMatrix[i] = new int[column];

Answer 1

I found the solution ... it is done simply by making a temporary variable (X) and appling the following code

for (int i=0;i<columns;i++)
{
   X=matrix[row1-1][i];
   matrix[row1-1][i]=matrix[row2-1][i];
   matrix[row2-1][i]=X;
}