''' Purpose: stepping stone to nested looping
'''

# get n
reply = input( 'Enter number of columns: ' )
n = int( reply )

# performed repeated printing of a number series
#    print a line of the form row: 0 1 2 ... n-1

#    to do so need to first print the row: part
#    then on same line print out the values 0 1 2 ... n-1 one after the other

# end='...' in the print statement is an optional parameter --> look in thats_printastic.py
print( 'row :', end=' ' )   # we want to print row: only once, and then the rest of the numbers
                            # on the same line

# need a for range loop to print each number from 0 to n - 1
# c for column
for c in range( 0, n ):
    print( c, end=' ' )   # we want each number to be printed on the same line but separated by a space

# when we want to end the current line
print()                   # prints nothing --> ends the current line so the next print statement will
                          # print on a new line
print( 'all done' )

# each row is made up of columns
# if we enter number of columns = 5, then that row has 5 columns which are denoted as
#   row: 0 1 2 3 4    --> important notation for later
# this doesn't indicate the number of rows. It's just saying that for this one row, here are the column indices