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  • Differentiate between constants and variable

    Constants

    variables

    characteristics

    Value is not changeableduring the course of the program

    Value can be changedanytime during the course of the program

    usage

    Use constant when you want to declare something that won't change midway in your program execution.

    Use variable to store data thatmay or will change during the running of the program.

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Q: Differentiate c constant and c variables?
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Differentiate between C Constants and C variables?

A constant value cannot be changed once set. A variable can be changed whenever you want.


What does constant of proportion mean?

If two variables are in direct relationship then the ratio of the two variables is known as the constant of proportion between them. In algebraic form, if X and Y are the two variables, then direct proportionality implies that Y = cX and c is the constant of proportionality.


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If two variables, X and Y, are in direct proportion then Y = c*X for some fixed value c. This value, c, is the constant of proportionality for this relationship.


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The state of being in proportion.


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