46  Pascal User Manual  Produces as results:  Notice again that each "branch" of an if statement consists of only one  statement.  Therefore,  when more  than one  action  is  intended,  a  compound statement is necessary.  The  case statement  consists of an expression (the selector) and a list of  statements, each being associated with one or more constant values of  the type of the selector. The selector type must be an ordinal type. Each  constant value must be associated with at most one of the statements.  The case statement selects for execution the statement that is associated  with the current value of the selector; if no such constant is listed, it is an  error. Upon completion of the selected statement, control goes to the  end of the case statement. The form is:  4.E.2  The case statement  Figure 4.n  Syntax diagram for  CaseStatement  1 I  2  II  4  IV  8  VIII  16 XVI  32 XXXII  64  LXIV  128 CXXVIII  256 CCLVI  512 DXII  1024  MXXIV  2048 MMXLVIII  4096 MMMMXCVI 