matlab - Write a program which takes a character string input and returns penultimate character. Whats wrong with my code? -


Using eBooks to learn new and new in Matlab.

The question was:

Write a MATLAB program that takes its input as a string of characters and prints its last letter.

The code I created: 

  A = four ('X'); X = input ('enter a string of characters:', 's'); disp (x (size -1));   
 What am I doing?  
 When I run it, the input is part and I get an error, I think this is due to the wrong index reference?  
 Thanks   
 
 
 is a function, not a variable, therefore, arguments for it , Such as  size (x)  which will return  [1 5]  for 1x5 matrix.  
 Try  X (length (x) -1)  or more precisely,  X (end-1)   
 and Info:  
     
  •  The dimension of return matrix.  
  •   Size (matrix, dimension)  Returns the number of elements in the dimension (row, column, etc.) of a matrix.  
  •  Returns the number of elements of a matrix for 2D matrix, this is  #rows * #cols . For any matrix, this is equivalent to  prod (matrix) .  
  •  Finds the number of elements with the largest dimension of the matrix. This is  maximum (size is equal to matrix)

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