Q.1) write C++code that ask the user to enter a number and the program will generate matrix K (4 by 4 matrix) and the chosen number will be the first element of that matrix. After that, the user will...

Extracted text: Q.1) write C++code that ask the user to enter a number and the program will generate matrix K (4 by 4 matrix) and the chosen number will be the first element of that matrix. After that, the user will chose one of the following functions:1) Swap function: the code will swap the elements of the secondary diagonal with the element of the main diagonal.2) Multiply by 3: the program will multiply the matrix by three (3) Exit : the program will exit.