# Arguments: none # # Return Values: $P$ : VGconditionals # $C$ : VGcode # $L$ : LOC # $T$ : LOconditionals # $D$ : DirectiveListing # $E$ : ExpressionListing # $outfile$ : ouput file (optional) # $scale_factor$ : graph scale factor (optional) # $graphfile$ : graph output file (optional) # $infile$ : code input file # Description: Parses the command line parameters according to the grammar # specified in &print_usage().