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third_party/nlohmann_json/docs/examples/diagnostics_standard.cpp

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+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    json j;
+    j["address"]["street"] = "Fake Street";
+    j["address"]["housenumber"] = "12";
+
+    try
+    {
+        int housenumber = j["address"]["housenumber"];
+    }
+    catch (const json::exception& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}