Write a program, using the syntax of whatever language you like, that produces different behavior depending on whether pass-by-reference or pass-by-value-result is used in its parameter passing.

'''

#!/usr/local/bin/python3

def add2x (x):

print ("beginning of add2x, x = %d" % x)

x + = 1

print ("end of add2x, x = %d" % x)

def add2y (y):

print ("beginning of add2y, y = %d" % y[ 0 ])

y[ 0 ] + = 1

print ("end of add2y, y = %d" % y[ 0 ])

if (__name__ = = "__main__"):

x = [ 5 ]

y = [ 5 ]

print ("before add2x, x = %d" % x[ 0 ])

add2x (x[ 0 ])

print ("after add2x, x = %d/n" % x[ 0 ])

print ("before add2y, y = %d" % y[ 0 ])

add2y (y)

print ("after add2y, y = %d" % y[ 0 ])

'''