elsif.t

UNIX下perl实现代码

#!./perl

# $RCSfile: elsif.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:08 $

sub foo {
    if ($_[0] == 1) {
	1;
    }
    elsif ($_[0] == 2) {
	2;
    }
    elsif ($_[0] == 3) {
	3;
    }
    else {
	4;
    }
}

print "1..4\n";

if (($x = &foo(1)) == 1) {print "ok 1\n";} else {print "not ok 1 '$x'\n";}
if (($x = &foo(2)) == 2) {print "ok 2\n";} else {print "not ok 2 '$x'\n";}
if (($x = &foo(3)) == 3) {print "ok 3\n";} else {print "not ok 3 '$x'\n";}
if (($x = &foo(4)) == 4) {print "ok 4\n";} else {print "not ok 4 '$x'\n";}