using namespace std in c 2b 2b

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showing results for - "using namespace std in c 2b 2b"
Jerónimo
04 Nov 2017
1#include <iostream>
2
3using namespace std;
4
5int main()
6{
7    cout << "Hello World";
8    system("pause");
9    return 0;
10    
11}
Noah
03 Sep 2018
1Namespaces avoids name collisions bacause of large libraray in c++.
2This feature was not supported in C
Jeanne
25 Jan 2017
1A namespace is a declarative region that provides a scope to the 
2  identifiers (the names of types, functions, variables, etc) inside 
3  it. Namespaces are used to organize code into logical groups and to
4  prevent name collisions that can occur especially when your code base
5  includes multiple libraries
Rebeca
21 Jan 2019
1//namespace is a declarative region to provide scope for identifiers
2#include <bits/stdc++.h>
3
4using namespace std; //including namespace std for cin and cout
5//my custom namespace for variables and functions
6namespace abc
7{
8  void fun()
9  {
10    cout<<"Hello world"<<endl;
11  }
12  int x=10;
13}
14using namespace abc;
15int main()
16{
17  cout<<10;
18  fun();
19  return 0;
20}
Charley
19 Apr 2019
1#include <iostream>
2using namespace std;
3namespace square{
4	int x;
5	int y;
6}
7int main(){
8	using namespace square;
9	x = 10;
10	y = 0;
11	cout << x << y << endl;
12}
Irene
19 Jul 2020
1Namespace std::cout or cout <<
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