5.2.b_while

while ( i > 0 ) num = num + 1
//Не е еизречение от езика защото няма {} и ;?

                    while_statement
                            |
             ---------------------------------------------------------
            WHILE LPAREN expression RPAREN                          block
               |    |        |         |                              |
             while  (        |         )                 LBRACKET statement RBRACKET
                             |                              |         |         |
                             |                              {         |         }
                             |                                   simple_statement SEMICOLON
       simple_expression relational_operator simple_expression         |              |
                |                 |                 |              assignment         ;
               term         GREATER_THAN           term                |
                |                                   |      variable BECOMES assignable
              factor                            INT_LITERAL   |        |        |
                |                                   |     IDENTIFIER   =    expression
             variable                               0         |                 |
                |                                            num                |
            IDENTIFIER                                       signed_term additive_operator signed_term
                |                                                  |             |              |
                i                                                 term          PLUS           term
                                                                   |             |              |
                                                                 factor          +            factor
                                                                   |                            |
                                                                variable                    INT_LITERAL
                                                                   |                            |
                                                               IDENTIFIER                       1
                                                                   |
                                                                  num