69 lines
2.2 KiB
TeX
69 lines
2.2 KiB
TeX
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\begin{center}
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\includegraphics[scale=0.4]{./fig/labyrinthe}
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\end{center}
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On a créé trois programmes pour permettre au poisson de regagner les issues A, B ou C.
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\small
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\begin{minipage}{0.3\textwidth}
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Programme 1
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\begin{scratch}
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\blockinit{quand \greenflag est cliqué}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{240}}
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\end{scratch}
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\end{minipage}
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\begin{minipage}{0.3\textwidth}
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Programme 2
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\begin{scratch}
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\blockinit{quand \greenflag est cliqué}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{240}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\end{scratch}
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\end{minipage}
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\begin{minipage}{0.3\textwidth}
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Programme 3
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\begin{scratch}
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\blockinit{quand \greenflag est cliqué}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\blockmove{avancer de \ovalnum{80}}
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\blockmove{tourner \turnright de \ovalnum{90} degrés}
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\end{scratch}
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\end{minipage}
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\normalsize
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\begin{enumerate}
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\item Quel programme permet d'aller en A? En B? En C?
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\item On souhaite simplifier le programme 3, en utilisant un boucle de la forme ci-contre.
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\begin{minipage}{0.7\textwidth}
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Quelles instructions va-t-on placer à l’intérieur de cette boucle?
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\end{minipage}
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\begin{minipage}{0.3\textwidth}
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\begin{scratch}
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\blockrepeat{répéter \ovalnum{6} fois}{
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\blockspace}
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\end{scratch}
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\end{minipage}
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\end{enumerate}
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