Hp 50g Graphing Calculator Manual do Utilizador descarregar pdf (Página 757)

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Page 23-1

Chapter 23

Character strings

Character strings are calculator objects enclosed between double quotes. They

are treated as text by the calculator. For example, the string “SINE

FUNCTION”, can be transformed into a GROB (Graphics Object), to label a

graph, or can be used as output in a program. Sets of characters typed by the

user as input to a program are treated as strings. Also, many objects in

program output are also strings.

String-related functions in the TYPE sub-menu

The TYPE sub-menu is accessible through the PRG (programming) menu, i.e.,

„°. The functions provided in the TYPE sub-menu are also shown below.

Among the functions in the TYPE menu that are useful for manipulating strings

we have:

OBJ: Converts string to the object it represents

STR: Converts an object to its string representation

TAG: Tags a quantity

DTAG: Removes the tag from a tagged quantity (de-tags)

CHR: Creates a one-character string corresponding to the number used as

argument

NUM: Returns the code for first character in a string

Examples of application of these functions to strings are shown next:

1 2 ... 752 753 754 755 756 757 758 759 760 761 762 ... 886 887

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