In the example below, we store coordinates in Decimal Degrees format, convert them to DDM and to DMS, then use a string formatter to convert coordinates as strings.

position_dd dd(47.51863818403278, -122.29686387310251);
position_ddm ddm = dd;
position_dms dms = dd;

position_display_string dd_fmt = format(dd, position_dd_format);
assert(dd_fmt.lat == "47.518638");
assert(dd_fmt.lon == "-122.296864");

position_display_string ddm_fmt = format(ddm, position_ddm_format);
assert(ddm_fmt.lat == "47°31.118'N");
assert(ddm_fmt.lon == "122°17.812'W");

position_display_string dms_fmt = format(dms, position_dms_format);
assert(dms_fmt.lat == "47°31'7.10\"N");
assert(dms_fmt.lon == "122°17'48.71\"W");

Tests are stored in ./tests/position_tests.cpp and are run automatically via a github action, on Ubuntu and Windows using the MSVC and GCC compilers.

As this is a header only library, you can simple download the header and use it:

file(DOWNLOAD https://raw.githubusercontent.com/iontodirel/position-lib/main/position.hpp ${CMAKE_SOURCE_DIR}/external/position.hpp )

Include the header:

#include "external/position.hpp"