Answer / santosh mundhe

Another advantage is that u can extend namespace within the
same file ....

E.g
#include <iostream>

using namespace std;

namespace
{
int myval;
void funct (int);
}

namespace
{
void funct (int i)
{
cout << i << endl;
}
}

int main()
{
funct(myval);
return 0;
}

Answer / c++ coder

in addition to the advantage mentioned above , there is one
more that the namespace is local to the file and one cannot
use it into another by 'using namespace' since it is
unnamed.

#include <iostream> using namespace std; int main() { int a = 3; int c[5][5]; for (int x=0;x<5;x++) { for (int y=0;y<5;y++) { c[x][y] = x*y; } } cout << c[a][2]; }

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