Formatting changes in gcd_w_concepts

day3/examples/gcd_w_concepts.cc

-#include <type_traits>
 #include <iostream>
+#include <type_traits>
 
 template <class T>
 concept Integral = std::is_integral_v<T>;
 
-constexpr auto gcd(Integral auto a, Integral auto b) {
-    if (b == 0) return a;
-    else return gcd(b, a % b);
+constexpr auto gcd(Integral auto a, Integral auto b)
+{
+    if (b == 0)
+        return a;
+    return gcd(b, a % b);
 }
 auto main() -> int
 {
@@ -14,4 +16,3 @@ auto main() -> int
     // are changed into integral types.
     std::cout << gcd(149935, 47295.) << "\n";
 }
-