Got rid of return 0 in some mains.

Author: jesyspa

Chapter 08 - Using Multiple Files/main.cpp

@@ -94,5 +94,13 @@ int main() {
         std::cout << " " << e;
     std::cout << "\n";
 
-    return 0;
+    // By the way, we've been writing return 0; at the end of every main
+    // function.  As I said before, the main function is weird: for example, you
+    // can't call it from inside your program.  Another (nice) quirk it has is
+    // that you are allowed to omit the return statement at the end, and the
+    // compiler will assume you returned 0.  This means we can stop writing it
+    // out now and let the compiler do the work.
+    //
+    // As you may have noticed, I'm extremely lazy and love letting software do
+    // work for me.
 }

Chapter 09 - Iterators/main.cpp

@@ -31,6 +31,4 @@ int main() {
         else
             std::cout << i << " was not amongst the numbers you entered.\n";
     }
-
-    return 0;
 }

Chapter 10 - References/main.cpp

@@ -289,6 +289,4 @@ int main() {
     for (auto e : filter_greater_than(v, 5))
         std::cout << " " << e;
     std::cout << "\n";
-
-    return 0;
 }

Chapter 11 - Standard Algorithms/main.cpp

@@ -75,6 +75,4 @@ int main() {
     std::cout << "Your input, sorted using a custom comparison function: ";
     display_range(v.begin(), v.end());
     std::cout << "\n";
-
-    return 0;
 }