GNU Octave

Time for action – interacting with the user

1. Open a new file and write the following commands in the editor:

   Code Listing 4.2
   nr = input("Enter the number of rows in the matrix: ");	   #1
   nc = input("Enter the number of columns in the matrix: ");	   #2
   									   #3
   A = rand(nr,nc);							   #4
   									   #5
   minA = min(min(A));							   #6
   									   #7
   disp("The minimum of A is");					   #8
   disp(minA);								   #9

   Save it as script42.m.

2. Executing Code Listing 4.2, we get:

   octave:10>script42
   
   Enter the number of rows in the matrix: 12
   
   Enter the number of columns in the matrix: 20
   
   The minimum of A is
   
   0.00511

What just happened?

Code Listing 4.2 allows the user to specify the size of the array (lines 1 and 2). Just like Code Listing 4.1, the script then finds the minimum of the array. The result is printed using the disp ...