json/api/macros/nlohmann_json_version_major.md

NLOHMANN_JSON_VERSION_MAJOR, NLOHMANN_JSON_VERSION_MINOR, NLOHMANN_JSON_VERSION_PATCH

#define NLOHMANN_JSON_VERSION_MAJOR /* value */
#define NLOHMANN_JSON_VERSION_MINOR /* value */
#define NLOHMANN_JSON_VERSION_PATCH /* value */

These macros are defined by the library and contain the version numbers according to Semantic Versioning 2.0.0.

Default definition

The macros are defined according to the current library version.

Examples

??? example

The example below shows how `NLOHMANN_JSON_VERSION_MAJOR`, `NLOHMANN_JSON_VERSION_MINOR`, and
`NLOHMANN_JSON_VERSION_PATCH` are defined by the library.

```cpp
#include <iostream>
#include <nlohmann/json.hpp>

using nlohmann::json;

int main()
{
    std::cout << "JSON for Modern C++ version "
              << NLOHMANN_JSON_VERSION_MAJOR << "."
              << NLOHMANN_JSON_VERSION_MINOR << "."
              << NLOHMANN_JSON_VERSION_PATCH << '\n';
}

```

Output:

```json
JSON for Modern C++ version 3.12.0

```

See also

• meta - returns version information on the library
• JSON_SKIP_LIBRARY_VERSION_CHECK - skip library version check
• Supported Macros - guide to all supported macros
• Integration - integrate the library

Version history

• Added in version 3.1.0.