What is the use of const keyword in functions?
I have seen a lot of examples where const is used instead of only declaring a constant variable.....so how does the const keyword function there.
For example:
also:
what happens in the above codes if const is not used and what is the effect produced due to the usage of const keyword?
For example:
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also:
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what happens in the above codes if const is not used and what is the effect produced due to the usage of const keyword?
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The use of
mutable:
http://en.cppreference.com/w/cpp/keyword/mutable
const_cast:
http://en.cppreference.com/w/cpp/language/const_cast
In case of a function, const can only be used with a member function. In that case the const prevents the modification of the member variables of this object.
const is always the same: The const object cannot be modified [without tricks like const_cast or mutable]mutable:
http://en.cppreference.com/w/cpp/keyword/mutable
const_cast:
http://en.cppreference.com/w/cpp/language/const_cast
In case of a function, const can only be used with a member function. In that case the const prevents the modification of the member variables of this object.
Last edited on
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