Initial Course

modules/03_functions/include/default_parameters.hpp

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+#pragma once
+
+#include <string>
+
+namespace functions {
+
+[[nodiscard]] auto repeat(char ch, int count = 1) -> std::string;
+[[nodiscard]] auto power(int base, int exponent = 2) -> long long;
+[[nodiscard]] auto clamp(int value, int min = 0, int max = 100) -> int;
+
+}  // namespace functions

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

modules/03_functions/include/overloading.hpp

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+#pragma once
+
+#include <string>
+
+namespace functions {
+
+[[nodiscard]] auto max_value(int a, int b) -> int;
+[[nodiscard]] auto max_value(double a, double b) -> double;
+[[nodiscard]] auto max_value(const std::string& a, const std::string& b) -> std::string;
+[[nodiscard]] auto area(int side) -> int;
+[[nodiscard]] auto area(int width, int height) -> int;
+
+}  // namespace functions

modules/03_functions/include/recursion.hpp

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+#pragma once
+
+namespace functions {
+
+[[nodiscard]] auto fibonacci(int n) -> long long;
+[[nodiscard]] auto sum_digits(int n) -> int;
+[[nodiscard]] auto is_palindrome(int n) -> bool;
+
+}  // namespace functions