Display 12.5 CS311

 #include <iostream>
 using namespace std;

 namespace savitch1
 {
 void greeting( );
 }

 namespace savitch2
 {
 void greeting( );
 }

 void big_greeting( );

 int main( )
 {
 {
 using namespace savitch2;
 greeting( );
 }

 {
 using namespace savitch1;
 greeting( );
 }

 big_greeting( );

 return 0;
 }

 namespace savitch1
 {
 void greeting( )
 {
 cout << "Hello from namespace savitch1.\n";
 }
 }

 namespace savitch2
 {
 void greeting( )
 {
 cout<< "Greetings from namespace savitch2.\n";
 }
 }

 void big_greeting( )
 {
 cout<< "A Big Global Hello!\n";
 }