Answer. Answer: @ , # , & cannot be used at the end of numeric variable..

Numeric variable can assume numeric value and is represented by an alphabet or an alphabet followed by another alphabet or digit. For example A, C, A2, ABC, A6 etc. represent numeric variables.

Constants are classified as string constants or numeric constants. String constants are further classified as character or graphic. Numeric constants are further classified as integer, floating point, or decimal. A negative sign in a numeric constant with a value of zero is ignored.

Answer: Numeric and String constant are the two types of constants in QBASIC.

In QBASIC, Numeric constant is another name for the numbers. A number can proceed with positive or negative sign; can be written with or without decimal point. A number can be also expressed in Exponential form i.e. 156000 or 1,56 106 are written as 1.56E6. A numeric constant does not consist comma, Rs.

For example, age and weight would be considered numerical variables, while phone number and ZIP code would not be considered numerical variables. There are 2 types of numerical variables: ● Continuous variable: A numerical variable that can take values on a continuous scale (e.g. age, weight).

Numeric variables contain only numbers and are suitable for numeric calculations such as addition and multiplication. String variables may contain letters, numbers and other characters. You can’t do calculations on string variables -even if they contain only numbers.

If you have already recorded your categorical variables as strings, you can easily convert them to a labelled, numerically coded variable using the Automatic Recode procedure. This procedure assigns each unique category a numeric code, then saves the converted values as a new variable.

Example: Nominal categorical variables that have been coded numerically (e.g., recording a subject’s gender as 1 if male or 2 if female) should be treated as numeric variables with zero decimal places. In this situation, the Measure setting must be defined as Nominal.

The alphanumeric variable is also called as alphanumeric constant. The alphanumeric value is the collection of numeric, letters and symbols. For example 4aa5c” is an alphanumeric variable. The alphanumeric constant is a collection of certain characters and names.

There are many different types of values that can be stored in a variable. In Kodable, we focus on three: Strings, Integers, and Arrays. A string is a type of value that can be stored in a variable. A string is made up of characters, and can include letters, words, phrases, or symbols.

For example, word processing programs manipulate character data. These programs use string variables to hold the character data. For example, the variables GALLONS and MILES in the previous program are numerical variables. A string variable is a variable that holds a character string.

Variables come in two basic types, viz: numeric and string. Variables such as age, height and satisfaction are numeric, whereas name is a string variable. String variables are best reserved for commentary data to assist the human observer. However they can also be used for nominal or categorical data.

Numeric variables are one of SPSS’ two variable types. They can be defined as variables that contain only numbers as values. * This is not as obvious as it seems because numeric values may not look like numbers at all.

A string is a data type used in programming, such as an integer and floating point unit, but is used to represent text rather than numbers. For example, the word “hamburger” and the phrase “I ate 3 hamburgers” are both strings. Even “12345” could be considered a string, if specified correctly.

The text is a linearly ordered string of bits representing the rest of the information required in the loading and listing processes. In fact, it was through ALGOL in April of 1960 that string seems to have taken its modern-day shorthand form “string” (up until then people said string of [something]).

String functions are used in computer programming languages to manipulate a string or query information about a string (some do both). The most basic example of a string function is the length(string) function. This function returns the length of a string literal. e.g. length(“hello world”) would return 11.

The main difference between Character and String is that Character refers to a single letter, number, space, punctuation mark or a symbol that can be represented using a computer while String refers to a set of characters.

Character strings are the most commonly used data types. They can hold any sequence of letters, digits, punctuation, and other valid characters. Typical character strings are names, descriptions, and mailing addresses.

Both Character Arrays and Strings are a collection of characters but are different in terms of properties. String refers to a sequence of characters represented as a single data type. Character Array is a sequential collection of data type char. Strings are immutable.

Most programming languages have a data type called a string, which is used for data values that are made up of ordered sequences of characters, such as “hello world”. A string can contain any sequence of characters, visible or invisible, and characters may be repeated. A string can be a constant or variable . …

Creating Strings The most direct way to create a string is to write: String greeting = “Hello world!”; In this case, “Hello world!” is a string literal—a series of characters in your code that is enclosed in double quotes.

Text enclosed in double quote characters (such as “example” ) is a string constant. The compiler merges a series of adjacent string constants into a single string constant (before automatically adding a null character at the end). For example, “sample” “text” produces the same single block of storage as “sampletext” .

Input string that contains valid number is casted to integer, decimal or float. Maximal length of input string is 18 characters. – decimal separator can be ‘,’ or ‘. then ‘String does not contain a valid number.