March 2017
Intermediate to advanced
364 pages
9h 45m
Japanese
Content preview from 初めてのPHP
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54
3
章 ロジック：判定と繰り返し
●
論理演算子（
&&
と
||
）を使って複雑なテスト式を作成する。
●
while()
を使ってコードブロックを繰り返す。
●
for()
を使ってコードブロックを繰り返す。
3.6
演習問題
＊1
1.
式の評価に PHP プログラムを使わずに、以下の式が
true
か
false
かどうかを判断しなさい。
a.
100.00 - 100
b.
"zero"
c.
"false"
d.
0 + "true"
e.
0.000
f.
"0.0"
g.
strcmp("false,"False")
h.
0 <=> "0"
2.
このプログラムの出力結果を PHP エンジンで実行せずに予想しなさい。
$a
ge = 12;
$shoe_size = 13;
if ($age > $shoe_size) {
print "Message 1.";
} elseif (($shoe_size++) && ($age > 20)) {
print
"Message 2.";
} else {
print "Message 3.";
}
print
"Age: $age. Shoe Size: $shoe_size";
3.
while()
を使って、-50F から 50F までの 5 度 刻みの華氏と摂氏の温度表を出力しなさい。華
氏では、水は 32F で凍り 212F で沸騰する、そして摂氏では、水は 0C で凍り、100C で沸騰
する、と定義されています。したがって、華氏から摂氏に換算するには、 ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.