Declaring variables with const

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#21

a cont int locks the variable from changing even if we declare a new one using the same name after the Variable is stored in the compiler.

#22

const is short for Constant. I believe it makes it so the variable canā€™t be changed (private).

#23

Iā€™m familiar with this from other languages. So, I am assuming itā€™s going to be the same in C++:

Declaring a variable with the const keyword means that the variable will always have the same value. Once declared and initialized, nothing can change the value of it.

const B = 2;

Using the above example, B must always be 2 and the compiler will not let us change it.

B = 5;

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Attempting to assign B again will result in an error.

4 Likes
#24

My guess would be that const would keep the number the same no mater how you try to change it

#25

Const locks in the initiated value of the variable. Changes to that variable will be ignored.

#26

I think that it changes the nature of the variable so that it can no longer be modified.

#27

I think const means constant and it keeps your declared variable from being changed.

#28

i think const mean that even if you add an other variable after you declare it
if you go like this
ex: const int a = 4

  a = 2

the compiler will ignore the new value you enter as 2.

#29

I think it declares a fixed value, not a variable valueā€¦

#30

const make the variable fixes ā€¦ means thought we say it a variable but the variable acts like a constant value if we try to assign a new value to constant variable then it will show error.

#31

I would guess the ā€œconstā€ makes it so the compiler sees the given variable as absolute, and cannot be modified.

#32

Const means constant, so it declares the integer as a fixed value rather than a variable. It also goes to global scope perhaps? Not sure.

#33

Const keyword stores a constant value to the variable when we initialize it and does not allow it to be changed. If changed it throws an error.

#34

I think ā€œconstantā€ means that after the variable has been initialized, it canā€™t be changed, based on the error I got when I tried to set a constant after it had been declared.

#36

I think that prepending the variable declarations with ā€˜constā€™ makes it so that the value of the variable cannot be altered after declaration.

#37

I think that by writing const in front of the variable means that after it got initialized, it cannot be changed anymore

#38

I guess const would maintain the integrity of the original value for each variable regardless of any other inputs.

#39

I think that using const will make it so that a variable wonā€™t be allowed to be changed after it has been declared anywhere else in the code.

#40

I guess it declares that the variable is not subject to change, so if we try and change it afterwards itā€™d not be possible. I think that const works with our code right now, but if we want to change the variable value the compiler would go crazy.

#41

I think adding const to a variable declaration will make it so the value of the variable does not change and stays the same.

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