if

Logical decision-making if statement. Can be combined with 'and' 'or' operators to create complex logical tables.

Syntax

if (condition)
  statement
end

if (condition)
  statement
else
  statement
end

if (condition)
  statement
elseif (condition)
  statement
else
  statement
end

Inputs

condition: Anything that can be logically tested.; Type: double | char | logical | struct | cell | integer; Dimension: scalar | vector | matrix

Outputs

statement: Executed if the condition returns true.

Examples

Simple if example:

x= 4
if x == 4
  b=2
end
b

x = 4
b = 2
b = 2

Simple if-else example:

a=2
if (a==0)
  b=0
else
  b=1
end
b

a = 2
b = 1
b = 1

Simple elseif example:

a=1
if (a==3)
  b=4
elseif a ==2
  b=7
elseif a == 9
  b=12
else
  b=-a
end
b

a = 1
b = -1
b = -1

Complex elseif example:

a=1
x = 'hello'
if a==3 && x == 'world'
  b=4
elseif a==2 || x=='hello'
  b=7
    disp('Hit the second elseif')
elseif a==9
  b=12
else
  b=-a
end
b

a = 1
x = hello
b = 7
Hit the second elseif
b = 7