Qbasic Part-I Questions

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Expression Types and operators with Example

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Expression and Operator Expression is a programming language statements that has a value. Usually an expression consists of an operator and each operands.  Operator performs mathematical or logical operations on value QBASIC supports following types of operators. Types of Operators:- a) Arithmetic operator b) Relational Operators c) Logical Operators d) String Operators a) Arithmatic Operators:- Arithmetic operator are used for various mathematical calculation . Arithmetic operators performed such as addition, subtraction, multiplication, division and exponentiation. A numeric expression is any collection of operators and operands. a) The following are the arithmetic operator used in QBASIC:-- Operators Operations Example ^ Exponential A^B - Negation -B * Multiplication A*B / Floating point division A/B \ integer division A\B MOD Modular Division A MOD B + Addition A+B - Subtraction A-B Example Code:- Example Output:- b) Relational Opera
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Variable and Types With Example

Variables:- Variable refers to a storage area whose contents can vary during processing. All the variables are created in the memory of the computer. The data store can change during the execution of the programs. The variables name have the following properties:- i) Any variables name may be up to 40 character long ii) Can’t contain characters other than letter, number and types of declaration character ($, %, #, & and ?) iii) Variable name must began with a letter (A-Z a-z (i.e. lowercase or uppercase letter).) iv) Can’t be reserved word like INPUT, v) Variable name represent either numeric values or strings. vi) Can’t began with “FN” unless it is a function call. Types of Variable a) Numeric Variable b) String Variable a) Numeric variable:- Numeric Variables can be any single letter of alphabetic followed by one of the numerals.  Example:-  A=12  pi=3.14  c=79.89 b) String Variable:- String Variables had the string of character or alpha numeric its valu
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