fig06_03.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 31 行

#!/usr/bin/perl
# Fig. 6.3: fig06_03.pl
# Demonstrating some math functions.

$_ = -2;
print "Absolute value of 5 is: ", abs( 5 ), "\n",
      "Absolute value of -5 is: ", abs( -5 ), "\n",
      "Absolute value of $_: ", abs, "\n\n";

print "exp( $_ ): ", exp, "\n";
print "log( 5 ): ", log( 5 ), "\n";
print "sqrt( 16 ): ", sqrt( 16 ), "\n";



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