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What is namespace?

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Namespaces allow us to group a set of global classes, objects and/or functions under a name. To say it somehow, they serve to split the global scope in sub-scopes known as namespaces. The form to use namespaces is: namespace identifier { namespace-body } Where identifier is any valid identifier and namespace-body is the set of classes, objects and functions that are included within the namespace. For example:Namespace general { int a, b; } In this case, a and b are normal variables integrated within the general namespace. In order to access to these variables from outside the namespace we have to use the scope operator. For example, to access the previous variables we would have to put: general::a general::b The functionality of namespaces is specially useful in case that there is a possibility that a global object or function can have the same name than another one, causing a redefinition error. © NewInterviewQuestions.com

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