Omitting Namespace

You might see some C++ programs that run without the standard namespace library. The using namespace std line can be omitted and replaced with the std keyword, followed by the :: operator for string (and cout) objects:

Example

#include <iostream>
#include <string>
// using namespace
std; - Remove this line

int main() {

std::string greeting = "Hello";
  std::cout
<< greeting;
  return 0;
}

Note: It is up to you if you want to include the standard namespace library or not. In our tutorial, we will continue to include the library.

Omitting Namespace – FAQs

Quick answers about learning Omitting Namespace in C++.

What does this Omitting Namespace note cover?

This free note from Coding Now Tech Institute explains Omitting Namespace in C++ — concept, syntax and worked code examples you can copy, run and revise before interviews.

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Omitting Namespace