Expression Operands

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Members of expressions

Numerical constants may not contain spaces.

Examples of correctly defined constants:

2; 3.344; -2.34; 1.234e+5; 1.2344E-32; 0.0034;

Examples of incorrectly defined constants:

2,34 – the comma is not allowed as the decimal symbol.

1.234 e+5 – inadmissible "space" symbol is used in a constant.

Note for local language users: in the exponential number representation, use only the US ASCII "E" or "e".

String constants.

A string constant is an arbitrary string entered in quotes:

"This is a string constant!"

Should a string constant include the quote symbol  ("), it must be preceded by the backslash symbol (\).

"This is another \"string\" constant!"

The above is the way to enter a string constant, whose value is to read,

This is another "string" constant!

To have the backslash symbol a part of a string constant, it must be duplicated.

Example:

"This \\is\\ t\w\o\!"

The value reads,

This \is\ two!

Note that a single backslash is ignored throughout.

Constant

In the system, it is possible to assign constant values to variables g,e, phi.

g(). Sets free-fall acceleration value.

e(). Sets Euler's value.

phi(). Sets golden ratio value.

VariablesEditor53

See Also:

Returning the number of records in a database