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As I learned in https://github.com/melpon/wandbox/issues/209, this library is already installed at Wandbox, so we need to adjust the examples to use `#include "json.hpp"` insteas of `#include <json.hpp>`.
32 lines
644 B
C++
32 lines
644 B
C++
#include "json.hpp"
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#include <iomanip> // for std::setw
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using json = nlohmann::json;
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int main()
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{
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// create a JSON object
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json object =
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{
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{"one", 1}, {"two", 2}, {"three", 2.9}
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};
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// output element with key "two"
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std::cout << object["two"] << "\n\n";
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// change element with key "three"
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object["three"] = 3;
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// output changed array
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std::cout << std::setw(4) << object << "\n\n";
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// mention nonexisting key
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object["four"];
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// write to nonexisting key
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object["five"]["really"]["nested"] = true;
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// output changed object
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std::cout << std::setw(4) << object << '\n';
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}
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