fig09_17.pl

PERL语言资料 可以用于PERL程序设计

#!usr/bin/perl
# Fig. 9.14: precision.pl
# Using precision while printing integers, 
# floating-point numbers, and strings

use warnings;
use strict;

my $integer = 873;
my $float = 123.94536;
my $string = "Happy Birthday";

printf "Using precision for integers\n";
printf "\t%.2d\n\t%.4d\n\t%.9d\n\n", $integer, $integer, $integer;

printf "Using precision for floating-point numbers\n";
printf "\t%.3f\n\t%.3e\n\t%.3g\n\n", $float, $float, $float;

printf "Using precision for strings\n";
printf "\t%.11s\n", $string;


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