MATLAB Function Reference

case - Execute block of code if condition is true

Syntax

switch switch_expr
 case case_expr
    statement, ..., statement
  case {case_expr1, case_expr2, case_expr3, ...}
    statement, ..., statement
  otherwise
    statement, ..., statement
end

Description

case is part of the switch statement syntax which allows for conditional execution. A particular case consists of the case statement itself followed by a case expression and one or more statements.

case case_expr compares the value of the expression switch_expr declared in the preceding switch statement with one or more values in case_expr, and executes the block of code that follows if any of the comparisons yield a true result.

You typically use multiple case statements in the evaluation of a single switch statement. The block of code associated with a particular case statement is executed only if its associated case expression (case_expr) is the first to match the switch expression (switch_expr).

To enter more than one case expression in a switch statement, put the expressions in a cell array, as shown above.

Examples

To execute a certain block of code based on what the string, method, is set to,

method = 'Bilinear';

switch lower(method)
   case {'linear','bilinear'}
      disp('Method is linear')
   case 'cubic'
      disp('Method is cubic')
   case 'nearest'
      disp('Method is nearest')
   otherwise
      disp('Unknown method.')
end

Method is linear

See Also

switch, otherwise, end, if, else, elseif, while

cart2sph

cast