1) A C++ program to add two numbers using pointers. 2) A C++ program to swap two numbers using pointers. 3) A C++ program that creates a two-dimensional integer array (4x3) initialized with user given...

1) A C++ program to add two numbers using pointers.

2) A C++ program to swap two numbers using pointers.

3) A C++ program that creates a two-dimensional integer array (4x3) initialized with user given data. The program should have the following functions:

• Print the sum of all values in the array.

• Print the average of all the values in the array.

• Take row number from user and print the sum of the values in that specified row.(use loop and no if statement)

• Take column number from user and print the sum of the values in that specified column.(use loop and no if statement)