Update algorithm-functions.md

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Author: Colin Robertson

docs/standard-library/algorithm-functions.md

@@ -662,29 +662,29 @@ The template function evaluates `*(dest + N) = *(first + N))` once for each `N`
 
 ```cpp
 // alg_copy_n.cpp
-// compile with: /EHsc
-
+// compile with: cl /EHsc /W4 alg_copy_n.cpp
 #include <algorithm>
 #include <iostream>
+#include <string>
 
 int main()
 {
-	using namespace std;
-	string s1{"bumblebee"};
-	string s2{ "copper" };
+    using namespace std;
+    string s1{"dandelion"};
+    string s2{"badger"};
 
-	cout << s1 << " + " << s2 << " = ";
-	
-	// Copy the first 3 letters from s1 
-	// to the first 3 position in s2
-	copy_n(s1.begin(), 3, s2.begin());
+    cout << s1 << " + " << s2 << " = ";
+    
+    // Copy the first 3 letters from s1 
+    // to the first 3 positions in s2
+    copy_n(s1.begin(), 3, s2.begin());
 
-	cout << s2 << endl;
+    cout << s2 << endl;
 }
 ```
 
 ```Output
-bumblebee + copper = bumper
+dandelion + badger = danger
 ```
 
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