diff --git a/modules/03_functions/src/default_parameters.cpp b/modules/03_functions/src/default_parameters.cpp
index 2c547d3..869ad59 100644
--- a/modules/03_functions/src/default_parameters.cpp
+++ b/modules/03_functions/src/default_parameters.cpp
@@ -1,9 +1,26 @@
 #include "default_parameters.hpp"
 
+#include <cmath>
+#include <sstream>
+
 namespace functions {
 
-auto repeat(char ch, int count) -> std::string { (void)ch; (void)count; return {}; }
-auto power(int base, int exponent) -> long long { (void)base; (void)exponent; return 0; }
-auto clamp(int value, int min, int max) -> int { (void)value; (void)min; (void)max; return 0; }
+auto repeat(const char ch, const int count) -> std::string {
+    std::ostringstream oss;
+    for (int i = 0; i < count; i++) {
+        oss << ch;
+    }
+    return oss.str();
+}
+
+auto power(const int base, const int exponent) -> long long {
+    return std::pow(base, exponent);
+}
+
+auto clamp(const int value, const int min, const int max) -> int {
+    if (value < min) return min;
+    if (value > max) return max;
+    return value;
+}
 
 }  // namespace functions