= Greater than or equal to, => can also be used for the same purpose.Relational Operators are used to perform decision making based on comparison between two or more quantities. Priority of Operators in GW-BASIC (High to Low) Operators are of 3 different types in BASICĪrithmetic Operators are used to perform mathematical calculations on numeric quantities. Operators – These are special symbols that are used for specific purpose.

N, VAL1, AREA, G, PI etc…Īlphanumeric Variables are used to store strings, these variables can also have a maximum length of 8 characters which can be both alphabets and numbers (must begin with an alphabet) but they must end with a $ sign. They can have a maximum length of 8 characters which can be both alphabets and numbers but they must begin with an alphabet and not a number. Numeric Variables can store only numeric constants. There are two types of variables in BASIC – A variable must start with an alphabet and can be maximum 8 characters long. A variable allocates a space inside the physical memory of the computer (RAM) to store a value. The value of a variable can change during the execution of a program. Variables – A variable is a memory location to store a constant. They may include alphabets, special characters, numbers or sentences. 656, – 26, 3.14, 9.8, 0.0 etc…Īlpha-Numeric Constants also known as String constants is a sequence of valid BASIC characters enclosed within a pair of double quotes. Numeric constants are numbers that can be either positive, negative or zero and can also be fractional numbers expressed with decimal point. There are two types of constants in GW-BASIC Those building blocks are –Ĭonstants – A constant is a term or value that does not change during program execution.

Just like any other programming language BASIC has certain building blocks which are used to develop programs. BASIC stand for Beginners All-purpose Symbolic Instruction Code, the GW in GW-BASIC stands for Gee Whiz (which means Surprised) sometimes it is also said that GW is named after Greg Whitten (former Microsoft Chief Software Architect) who developed the translator for BASIC.

Gw basic programs for 10th class