%% HOW DO I DO THAT IN MATLAB SERIES?

% In this series, I am answering questions that students have asked

% me about MATLAB.

%% TOPIC

% How do I check if a number is non-negative or negative

%% SUMMARY

% Language : Matlab 2010a;

% Authors : Autar Kaw and Sri Harsha Garapati;

% Mfile available at

% http://numericalmethods.eng.usf.edu/blog/if_else_end_statements_blog.m

% Last Revised : January 23, 2012;

% Abstract: This program shows you how to check if a number is negative or

% non-negative using if-else-end statement in MATLAB

clc

clear all

%% INTRODUCTION

disp(‘ABSTRACT’)

disp(‘ This program shows you how to check if a number is negative or’)

disp(‘ non-negative using if-else-end statement in MATLAB’)

disp(‘ ‘)

disp(‘AUTHOR’)

disp(‘ Autar Kaw and Sri Harsha Garapati of http://autarkaw.wordpress.com’)

disp(‘ ‘)

disp(‘MFILE SOURCE’)

disp(‘ http://numericalmethods.eng.usf.edu/blog/if_else_end_statements_blog.m’)

disp(‘ ‘)

disp(‘LAST REVISED’)

disp(‘ February 13, 2012′)

disp(‘ ‘)

%% INPUTS

% Enter the number to be tested

a=4;

%% DISPLAYING INPUTS

disp(‘ ‘)

disp(‘INPUTS’)

% Printing the input number

fprintf(‘The input number to be tested is %g\n’,a)

%% CODE AND DISPLAYING OUTPUT

disp(‘ ‘)

disp(‘OUTPUTS’)

% using the if-else-end statement to check

if (a>=0)

disp(‘The number is nonnegative’)

else

disp(‘The number is negative’)

end

_________________________________________________

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