BASIC: show limits of some types.

Author: Gonzalo Diaz

src/lib/exercises/include/exercises/basic/limits.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+namespace basic {
+
+void limits();
+
+}

src/lib/exercises/src/basic/limits.cpp

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+#include <exercises/basic/limits.hpp>
+
+#include <iostream>
+#include <limits>
+
+namespace basic {
+
+void limits() {
+  std::cout << "type\t│ lowest()\t│ min()\t\t│ max()\n"
+            << "bool\t│ " << std::numeric_limits<bool>::lowest() << "\t\t│ "
+            << std::numeric_limits<bool>::min() << "\t\t│ "
+            << std::numeric_limits<bool>::max() << '\n'
+            << "uchar\t│ " << +std::numeric_limits<unsigned char>::lowest()
+            << "\t\t│ " << +std::numeric_limits<unsigned char>::min()
+            << "\t\t│ " << +std::numeric_limits<unsigned char>::max() << '\n'
+            << "int\t│ " << std::numeric_limits<int>::lowest() << "\t│ "
+            << std::numeric_limits<int>::min() << "\t│ "
+            << std::numeric_limits<int>::max() << '\n'
+            << "float\t│ " << std::numeric_limits<float>::lowest() << "\t│ "
+            << std::numeric_limits<float>::min() << "\t│ "
+            << std::numeric_limits<float>::max() << '\n'
+            << "double\t│ " << std::numeric_limits<double>::lowest() << "\t│ "
+            << std::numeric_limits<double>::min() << "\t│ "
+            << std::numeric_limits<double>::max() << '\n';
+}
+} // namespace basic

src/tests/unit/lib/basic/limits.test.cpp

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+#include <catch2/catch_test_macros.hpp>
+
+#include <exercises/basic/limits.hpp>
+
+TEST_CASE("limits", "[basic]") { basic::limits(); }