CIW PERL FUNDAMENTALS - 1D0-437 模擬練習
Which one of the following statements opens a file for appending?
正解: A
In Perl, packages are used for which task?
正解: A
Which one of the following choices lists only valid expression operators?
正解: D
Which one of the following choices lists the three loop-control commands?
正解: A
Consider the following program code:
@array = ("one", "two");
push(@array, "three");
shift(@array);
unshift(@array, "four");
pop(@array);
print($array[0]);
What is the output of this code?
@array = ("one", "two");
push(@array, "three");
shift(@array);
unshift(@array, "four");
pop(@array);
print($array[0]);
What is the output of this code?
正解: C
Consider the following program code:
$x = 150;
$y = "250";
if (($x + 100) == $y) { print("1 "); }
if ("250" == $y) { print("2 "); }
if ("250" eq $y) { print("3 "); }
if ($x lt $y) { print("4 "); }
if ($x ge $y) { print("5 "); }
What is the result of executing this program code?
$x = 150;
$y = "250";
if (($x + 100) == $y) { print("1 "); }
if ("250" == $y) { print("2 "); }
if ("250" eq $y) { print("3 "); }
if ($x lt $y) { print("4 "); }
if ($x ge $y) { print("5 "); }
What is the result of executing this program code?
正解: C