Getting Started

switch and case

The switch statement executes groups of statements based on the value of a variable or expression. The keywords case and otherwise delineate the groups. Only the first matching case is executed. There must always be an end to match the switch.

The logic of the magic squares algorithm can also be described by

 switch (rem(n,4)==0) + (rem(n,2)==0)
    case 0
       M = odd_magic(n)
    case 1
       M = single_even_magic(n)
    case 2
       M = double_even_magic(n)
    otherwise
       error('This is impossible')
 end

Note    Unlike the C language switch statement, MATLAB's switch does not fall through. If the first case statement is true, the other case statements do not execute. So, break statements are not required.

if

for