PROC usage = VOID: printf(($gl$, "Usage: please provide a string")); PROC remove all whitespace := (STRING s) STRING: ( STRING t; FOR n TO UPB s DO IF NOT isspace(s[n]) THEN t +:= s[n] FI OD; t ); # Get 1st command-line argument. Exit if empty # STRING s := argv(4); IF UPB s = 0 THEN usage; stop FI; # Remove all whitespace and display result # s := remove all whitespace(s); printf(($gl$, s))
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