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As <iostream> is not included in json.hpp any more, all code examples need to include <iostream> now.
44 lines
874 B
C++
44 lines
874 B
C++
#include <iostream>
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#include "json.hpp"
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using json = nlohmann::json;
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int main()
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{
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// create JSON array
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json array = {"first", "2nd", "third", "fourth"};
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// output element at index 2 (third element)
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std::cout << array.at(2) << '\n';
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// change element at index 1 (second element) to "second"
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array.at(1) = "second";
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// output changed array
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std::cout << array << '\n';
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// exception type_error.304
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try
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{
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// use at() on a non-array type
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json str = "I am a string";
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str.at(0) = "Another string";
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}
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catch (json::type_error& e)
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{
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std::cout << e.what() << '\n';
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}
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// exception out_of_range.401
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try
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{
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// try to write beyond the array limit
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array.at(5) = "sixth";
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}
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catch (json::out_of_range& e)
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{
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std::cout << e.what() << '\n';
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}
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}
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