######## DM2
######## basics 0: variables

######## further details see
######## https://developer.rhino3d.com/guides/rhinopython/

######## command and functional test
print( "Hello World!" )
print( "_diag: \"Hello World!\"\n\n" )

######## variants to call print
print( "Hello" + "World" + "!" )                ## concatenation
print "Hello", "World", "!"                     ## default separator

"""
block comment
do not execute these lines
"""
                                                
######## types of variables
ganzzahl = 3                                    ## integer variable, a number
fliesskommazahl = 2.0                           ## float variable, a number
zeichenkette = "1"                              ## string variable
print( zeichenkette + zeichenkette )            ## concat
zeichenkette = 1                                ## now redefine variable type
print( zeichenkette + zeichenkette )            ## mathemetical addition
print( "it's POSSIBLE to redefine variable types!\n" );

######## basic math operators
print( 3 + 2 )                                  ## sum
print( 3 - 2 )                                  ## difference
print( 3 * 2 )                                  ## product
print( 3 / 2 )                                  ## quotient, integers and floats are treated as values
print( 3 ** 2 )                                 ## exponentiation

######## calculate, concatenate, print
print(                                          ## command with left parenthesis
    "Adding: "                                  ## string
    +                                           ## concat
    str( ganzzahl )                             ## include variable
    +                                           ## concat
    " + "                                       ## plus as character
    +                                           ## concat
    str( fliesskommazahl )                      ## include variable
    +                                           ## concat
    " = "                                       ## equals sign as character
    +                                           ## concat
    str( ganzzahl + fliesskommazahl )           ## mathemetical addition
    )                                           ## right parenthesis, execute command (without semicolon)

######## calculate, concatenate, print, now in a single line
print "Adding:", ganzzahl, "+", fliesskommazahl, "=", (ganzzahl+fliesskommazahl)