20 lines
362 B
Plaintext
20 lines
362 B
Plaintext
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expr length stock_market
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affiche: 12
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expr substr stock_market 1 5
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stock
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expr substr stock_market 7 12
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market
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expr index stock_market "_"
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6
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parce que "_" est a la 6eme position
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expr index stock_market "_c"
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4
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parce que "c" est a la 4eme position
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(il regarde le premier chractere qui a une correspondance avec l'un des charactere de la chaine en EXPRESSION )
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