Initial Course

modules/03_functions/include/function_basics.hpp

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+#pragma once
+
+#include <string>
+#include <vector>
+
+namespace functions {
+
+[[nodiscard]] auto square(int value) -> int;
+void swap_integers(int& lhs, int& rhs);
+[[nodiscard]] auto concatenate(const std::vector<std::string>& parts) -> std::string;
+void append_suffix(std::string& text, const std::string& suffix);
+
+}  // namespace functions