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: / usr / share / doc / python-ply-3.4 / example / BASIC /

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100 LET X = 3
110 GOSUB 400
120 PRINT U, V, W
200 LET X = 5
210 GOSUB 400
220 LET Z = U + 2*V + 3*W
230 PRINT Z
240 GOTO 999
400 LET U = X*X
410 LET V = X*X*X
420 LET W = X*X*X*X + X*X*X + X*X + X
430 RETURN
999 END