diff --git a/1-hello-world/hello.cpp b/1-hello-world/hello.cpp
index 95b5145..725f19c 100644
--- a/1-hello-world/hello.cpp
+++ b/1-hello-world/hello.cpp
@@ -1,8 +1,16 @@
 #include <iostream>
 
+using namespace std; 
+
+//“using namespace std” means we use the namespace named std. “std” is an abbreviation for standard. 
+//If we don’t want to use this line of code, we can use the things in this namespace like this. std::cout, std::endl.
+//If this namespace is not used, then computer finds for the cout, cin and endl etc.. Computer cannot identify those and therefore it throws errors.
+
+
+
 int main() {
 
-  std::cout << "Hello World!\n";
+  cout << "Hello World!\n";
 
   return 0;