MATLAB FINANCIAL DERIVATIVES TOOLBOX Uživatelský manuál stáhnout pdf (Strana 73)

4.2.1 The

f Statement

The

f statement evaluates a logical expression and executes a group of

statements when the expression is TRUE. The optional

f and

keywords can be used for the execution of alternate groups of statements.

keyword, which matches the

f, terminates the last group of

statements. The groups of statements are delineated by the four above

keywords-no braces or brackets are involved [2]. The three possible syntax

versions of this conditional expression are tabulated in Table 7.

Syntax Example

if logical expression

segment of programming code executed

if the logical expression is TRUE

end

flag=1;

if ~isempty(flag)

disp('Hello')

end

if logical expression

segment of programming code executed

if the logical expression is TRUE

else

segment of programming code executed

if the logical expression is FALSE

end

sales=5000;

if sales<1000

Profit=sales*0.1;

else

Profit=(sales-1000)*0.2+1000*0.1;

end

if logical expression #1

segment of programming code executed

if the logical expression #1 is TRUE

elseif logical expression #2

segment of programming code executed

if the logical expression #2 is TRUE

else

segment of programming code executed

if the previous logical expressions are

FALSE

end

sales=5000;

if (sales>1000 & sales<=2000)

disp('Low Sales');

Profit=sale*0.1;

elseif (sales>2000 & sales<=10000)

disp('Medium Sales ');

Profit=sales*0.15;

else

disp('Satisfactory Sales ');

Profit=sales*0.17;

end

Table 7: The

f statement syntax and examples.

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 118 119

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