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10 Cards in this Set
- Front
- Back
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Name five basic programming terms
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* Identifier * Variables * Constants * Data Types * Casting |
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What is an identifier?
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An identifier is a name given to variables, constants, functions and procedures.
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What are variables?
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Variables are identifiers that refer to a location in memory containing a value that can be accessed or changed during the running of the program. EG - A total |
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What is a constant? |
A constant is an identifier that can refer to a location in memory containing a value that can be accessed BUT NOT CHANGED during the running of the program.
EG - VATRate |
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What will the computer do when you declare a variable?
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The computer will allocate some memory large enough to hold the data and assign that memory the identifier decided by the user.
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What are the differences between a variable and a constant?
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Variables can be changed during the running of a program, a constant cannot be changed during the running of a program. Constants must be given a value when its declared. A variable must be declared but can be assigned a value when the program is running. |
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State all data types.
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* String * Char * Integer * Real/double * Date * Boolean |
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Casting
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Language have functions to let you switch between data types. |
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Arithmetic Operations
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* + ---> Add * - ---> Subtract * / ---> Divide with at least one decimal * ^ ---> Exponent * * ---> Multiply * / (DIV) ---> DIV how many times does the number on the right go in the number on the left * % (MOD) ---> MOD returns the remainder after division |
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