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Show
Syntax
Show <expN> [{, expN}]
Expressions (expN) can either a variable or a constant or any valid
arithmetic or concatenation operation.
Accept
Syntax
Accept <variable name> [{, <variable name>}]
VARIABLE TYPES
Every variable should start with a specified character.
NUMERICAL
Range: -32,768 to +32,768
Should start with N
CHARACTER
Range: No limit
Should start with C
REAL
Range: -32,768 to +32,768 with n decimal places
Should start with R
All the variables which are used in the program should be
declared using var statement. The name of the variables should not
exceed 10 characters including the special character mentioned above.
CONSTANTS
Any valid number or string value. String value should be enclosed within
double codes. The value of the variables should not exceed 50 characters.
OPERATORS
Arithmetic
+ - Addition
- - Subtraction (Also can be used as unary -)
* - Multiplication
/ - Division
= - Assignment
Conditional
.eq. - Equal to
.gt. - Greater than
.lt. - Less than
.ge. - Greater than or equal to
.le. - Less than or equal to
Logical
.not. - Not
.and. - And
.or. - Or
CONTROL STRUCTURES
Conditional Structures
IF CONSTRUCT
Syntax
If (<condition>)
...
...
else
...
...
iend
The if construct is one of the most important construct of many languages,
TYRO included. It allows for conditional execution of code fragments. TYRO
features an if structure that is similar to that of BASIC and C. The IF
keyword in TYRO should be followed by a logical condition, which when
becomes true continues execution and when false transfers the control to
the else statement.
As of for the latest version, TYRO supports only numerical
logical expressions.
FOR CONSTRUCT
Syntax
For <variable name> = <initial value>..<final value> [step <value>]
Fend
For looping is one of the primitive looping constructs around. The index
variable name of a for looping should be accompanied by the initial value
and the final value, separate by two dots(..). The step key word is
optional which specifies the incrementing quantity. The step value can
only be an integer
WHILE CONSTRUCT
Syntax
While (<condition>)
Wend
While loops are the simplest type of loop in TYRO. While looping is
similar to for looping with the only difference being, the variable should
be incremented or decremented manually by the user. The while keyword is
followed by a logical condition.
FUNCTIONS
The function name should start with the letter F. The length of the
function name should not exceed 10 characters.
Declaration
Function <function name> [<parameter>]
Definition
Function <function name> [<formal parameters>]
...
...
hang
Calling
Ring <function name> [<parameters>]
Returning the Value
Reply <return value>
Each function in a tyro program should be declared initially. The function
is called using the keyword Ring, with parameters if any. The function
is defined outside the main scope (begin
end) with the same way as it is
declared. Its scope is terminated using the Hang keyword. To return a
value from a function Reply <value> should be used.
BUILTIN FUNCTIONS
TYRO has very rich library of inbuilt functions. They are automatically
included in the programs while compiling and executing. Every inbuilt
function starts with a letter T. The inbuilt functions of TYRO can be
classified into
Arithmetic Functions
Conversion Functions
String Functions
Trigonometrical Functions
For information about the functions look at the
manual.
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