What is namespace std in C++
Std is a namespace which is built-in in
library files of C++. Std deals with the cin and cout.that is std tells to
compiler that what is cin and cout.
A simple example of std to understand its concept
#include <iostream>
using namespace std;
void main() {
cout << "Hello World!" << endl;
system(“pause”);
}
Now without std namespace the same code will be written as
#include <iostream>
using namespace std;
void main() {
std::cout << "Hello World!" << std::endl;
system(“pause”);
}
