Introduction - If you have any usage issues, please Google them yourself
(1) extended assignment: = and / =
FOR < > > TO expression =< variables: < DO < > > expression statement
The FOR < > > DOWNTO expression =< variables: < < statement > > DO.
Among them, the step size of the cyclic variable of statement is 1,
The step size of the cyclic variable is -1.
(1) increase type: character type; type of real number.
(4) adding one-dimensional array types (with additional instructions).
(5): + + and increase operation.