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Table of Contents

- What is an expression that is a number a variable or the product of a number and variables?
- When a term is a product of a number and a power of a variable?
- What is a statement that is true for any number or variable?
- What is a constant variable or the product of a constant and variables?
- How do you declare and initialize a variable?
- How many variables can you declare in one line?
- What is dynamic initialization of variables in C++?
- What is static and dynamic initialization explain with example?
- What is init C?
- What are variables C?
- What are local variables in C?
- What is variable in C example?
- Which variables Cannot be declared?

7th Grade Math Vocab Chapter 1

A | B |
---|---|

algebraic expression | a combination of variables, numbers, and atleast one operation |

term | a number, a variable, or a product or quotient of numbers and variables |

coefficient | the numerical factor of a term that contains a variable |

constant | a term that does not contain a variable |

Polynomials are algebraic expressions that contain any number of terms combined by using addition or subtraction. A term is a number, a variable, or a product of a number and one or more variables with exponents. Like terms (same variable or variables raised to the same power) can be combined to simplify a polynomial.

A statement that is true for any number or variable is called an identity. This is the definition of the term “identity.”

A term can be a signed number, a variable, or a constant multiplied by a variable or variables. When a term is made up of a constant multiplied by a variable or variables, that constant is called a coefficient. In the term 5x, the coefficient is 5. In some terms, the variables will have exponents, such as .

Use these guidelines when declaring and initializing variables:

- Declare variables using this format: datatype variable name = initial value; /* descriptive comment*/
- Declare all variables used within business functions and internal functions at the beginning of the function.

Do not declare more than one variable per declaration. Every declaration should be for a single variable, on its own line, with an explanatory comment about the role of the variable. Declaring multiple variables in a single declaration can cause confusion regarding the types of the variables and their initial values.

C++Server Side ProgrammingProgramming. Dynamic initialization of object refers to initializing the objects at run time i.e. the initial value of an object is to be provided during run time. Dynamic initialization can be achieved using constructors and passing parameters values to the constructors.

A static method can be accessed directly by the class name and doesn’t need any object. A static method cannot refer to “this” or “super” keywords in anyway. Java allows its programmers to initialize a variable at run time also. Initializing a variable at run time is called dynamic initialization.

In computer programming, initialization (or initialisation) is the assignment of an initial value for a data object or variable. Initialization is done either by statically embedding the value at compile time, or else by assignment at run time.

A variable is nothing but a name given to a storage area that our programs can manipulate. Each variable in C has a specific type, which determines the size and layout of the variable’s memory; the range of values that can be stored within that memory; and the set of operations that can be applied to the variable.

Variables that are declared inside a function or block are called local variables. They can be used only by statements that are inside that function or block of code. Local variables are not known to functions outside their own. Here all the variables a, b, and c are local to main() function.

Variable is the name of memory location. Unlike constant, variables are changeable, we can change value of a variable during execution of a program. A programmer can choose a meaningful variable name. Example : average, height, age, total etc.

Which variables cannot be declared ?

- structure.
- pointer.
- class.