HP 3000 Manuals HP 3000 Manuals
The Calculator
The HP Business BASIC/XL interpreter can be used as a calculator. If you
type in a numeric expression without a line number, HP Business BASIC/XL
will return the value of that expression. Table 2-12 summarizes the what
happens with each response to the interpreter prompt. Note that at the
end of each line, you can type either RETURN or CONTROL E.
Table 2-12. The Calculator
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| | | |
| In Response to the | Then press: | Effect |
| Interpreter Prompt (>), Type: | | |
| | | |
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| | | |
| Expression (except a numeric | RETURN | HP Business BASIC/XL displays the |
| literal) | | value of the expression. |
| | | |
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| | | |
| num_lit | RETURN | HP Business BASIC/XL deletes the |
| | | program line that is numbered |
| | | num_lit. |
| | | |
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| | | |
| Program line | RETURN | HP Business BASIC/XL adds the |
| | | program line to the program. |
| | | |
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| | | |
| Anything else | RETURN | RETURN is treated as CONTROL E |
| | | |
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| | | |
| Anything | CONTROL E | HP Business BASIC/XL executes the |
| | | statement that would result from |
| | | putting "DISP" before what was |
| | | typed. |
| | | |
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| | | |
| Nothing | CONTROL E | HP Business BASIC/XL executes the |
| | | STEP command. Refer to "Debugging |
| | | a Program" earlier in this chapter |
| | | for more information. |
| | | |
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Example
>2+2 RETURN (numeric expression)
4
>(5*(27/3)) RETURN (numeric expression)
45
>Index1=12 RETURN (assignment)
12
>Index2=3 RETURN (assignment)
3
>Index1*Index2 RETURN (numeric expression)
36
>10 PRINT RETURN (program line)
>10 (line number with nothing else deletes line)
>Index1*Index2 RETURN (numeric expression)
36
>Index1=12 RETURN (assignment)
12
>Index2=Index1 RETURN (assignment)
12
>10 PRNIT RETURN (syntax error)
Error