Introduction to MATLAB - Numerical Methods in Engineering with MATLAB - page 9

>> c

{

1

}

(2) % Second element of first cell

ans =

2

{ >> c 2

}

% Second cell

ans =
one two three

Strings

A string is a sequence of characters;it istreatedbyMATLABas a character array. Strings
arecreatedbyenclosing the characters between single quotes. Theyareconcatenated
with the function strcat , whereas a colon operator ( : ) is used to extract aportion of
the string. For example,

>> s1 = 'Press return to exit'; % Create a string

>>s2='theprogram'; %Createanotherstring

>> s3 = strcat(s1,s2) % Concatenate s1 and s2

s3 =
Press return to exit the program
>> s4 = s1(1:12)

% Extract chars. 1-12 of s1

s4 =
Press return

1.3 Operators

Arithmetic Operators

MATLAB supports the usual arithmeticoperators:

+ Addition

− Subtraction

∗ Multiplication

ˆ Exponentiation

When applied to matrices, theyperform the familiar matrix operations, as illus-
tratedbelow.

>>A=[123;456];B=[789;012];

>>A+B %Matrixaddition