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TCBASIC(1)			 User Commands			    TCBASIC(1)

NAME
       tcbasic - a small BASIC Interpreter written in C

SYNOPSIS
       tcbasic [filename]

DESCRIPTION
       tcbasic	implements  a small subset of BASIC in portable	C. If the user
       specifies a filename on the command line	or pipes data to tcbasic,  the
       results	will  be  written to standard out. If no file is specified, an
       interactive mode	is started where a user	can interact  with  the	 BASIC
       system directly.

OPTIONS
       -h, -?		 --help
	      Print a helpful message and exit

       -v		  --version
	      Print version information	and exit

STATEMENTS
       REM remark
	      Remark has no effect on the execution of the program and acts as
	      a	comment	to the developer. The remark can contain  any  charac-
	      ter.

       PRINT list
	      Prints  the  contents of 'list' to the console where 'list' is a
	      comma separated list of one or more quoted strings, expressions,
	      and/or variables.

       IF expression relop expression THEN statement
	      Evaluates	 both 'expression's and	compares them using relational
	      operator 'relop'.	If the relation	is true,  then	the  statement
	      will be executed.	Otherwise, the statement is skipped.

       GOTO expression
	      Evaluates	 'expression' and jumps	to the corresponding line num-
	      ber.

       INPUT var_list
	      Given a comma separated list of 1	or more	variables,  this  com-
	      mand will	prompt the user	to enter a comma separated list	of ex-
	      pressions.  The value of each expression	will  be  assigned  to
	      each corresponding variable.

       GOSUB expression
	      Evaluates	 'expression' and jumps	to the corresponding line num-
	      ber after	saving the current line	number.

       RETURN Returns control to the line after	the last 'GOSUB' call.

       LET var = expression
	      Assigns the value	of expression to variable 'var'	where 'var' is
	      a	single character variable name in the range from A to Z.

       END    Ends the execution of the	program.

       STOP   Exits the	interpreter.

       RANDOMIZE
	      Re-seeds	the  random  number generator, causing RND to return a
	      different	sequence of random numbers.

FUNCTIONS
       RND    Returns a	random number in the range [0,1). The same sequence of
	      numbers  is  returned  in	 each  program	run. Use the RANDOMIZE
	      statement	to generate different sequences	in each	program	run.

       SIN (expression)
	      Returns the sine of the given expression (measured in radians).

       COS (expression)
	      Returns the cosine of the	given expression  (measured  in	 radi-
	      ans).

       TAN (expression)
	      Returns  the  tangent of the given expression (measured in radi-
	      ans).

       COT (expression)
	      Returns the cotangent of the given expression (measured in radi-
	      ans).

       ATN (expression)
	      Returns  the arctangent of the given expression (measured	in ra-
	      dians).

       EXP (expression)
	      Returns e	to the power of	the given expression.

       LOG (expression)
	      Returns the natural logarithm of of the given expression.

       ABS (expression)
	      Returns the absolute value of the	given expression.

       SQR (expression)
	      Returns the square root of the given expression.

COMMANDS
       CLEAR  Clears the program from memory and sets all variables to 0.

       LIST   Prints the current program.

       RUN    Executes the current program.

AUTHORS
       See https://github.com/tcort/tcbasic/graphs/contributors

REPORTING BUGS
       See https://github.com/tcort/tcbasic/issues

COPYRIGHT
       Copyright (C) 2015 Thomas Cort <linuxgeek@gmail.com>
       This is free software; see the source for copying conditions.  There is
       NO  warranty;  not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
       PURPOSE.

tcbasic	2.1.0			   May 2015			    TCBASIC(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | STATEMENTS | FUNCTIONS | COMMANDS | AUTHORS | REPORTING BUGS | COPYRIGHT

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