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【PHP基礎①】数値の入力と文字列の入力の違い

Last updated at Posted at 2022-06-13

[問題]  (参照:http://www.cc.kyoto-su.ac.jp/~mmina/bp1/hundredKnocksBasic.html)
1789+1758を計算して結果を表示するプログラムを作成しなさい。

コード

1. 数値として数字を入力する場合
echo 1789+1758;

2.文字列として数字を入力する場合
echo '1789+1758';

結果

1. 3547
2. 1789+1758

☆数値として表示させたい、計算させたい時は、' 'を付けない。

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