シェルスクリプト総合 その19

[0967 名無しさん＠お腹いっぱい。 2012/06/07(木) 00:50:16.01]

#!/bin/sh
# hilow - a simple number guessing game

biggest=100 # maximum number possible
guess=0 # guessed by player
guesses=0 # number of guesses made
number=`expr $$ % $biggest` # 1 から $biggest の間の乱数を生成

while [ $guess -ne $number ]
do
echo "Guess? "
read guess # read guess で guess 変数にキーボードから入力した値が入る
if [ $guess -lt $number ]
then
echo "... bigger!"
elif [ $guess -gt $number ]
then
echo "... smaller!"
fi
guesses=`expr $guesses + 1` # guesses の値を1増やしている
done

echo "Right!! Guessed $number in $guesses guesses."