usingnamespaceSystem;usingnamespaceNETGeographicLib;intmain(array<System::String^>^/*args*/){try{MagneticModel^mag=gcnewMagneticModel("wmm2010","");doublelat=27.99,lon0=86.93,h=8820,t=2012;// Mt Everest{// Slow method of evaluating the values at several points on a circle of// latitude.for(inti=-5;i<=5;++i){doublelon=lon0+i*0.2;doubleBx,By,Bz;mag->Field(t,lat,lon,h,Bx,By,Bz);Console::WriteLine(String::Format("{0} {1} {2} {3}",lon,Bx,By,Bz));}}{// Fast method of evaluating the values at several points on a circle of// latitude using MagneticCircle.MagneticCircle^circ=mag->Circle(t,lat,h);for(inti=-5;i<=5;++i){doublelon=lon0+i*0.2;doubleBx,By,Bz;circ->Field(lon,Bx,By,Bz);Console::WriteLine(String::Format("{0} {1} {2} {3}",lon,Bx,By,Bz));}}}catch(GeographicErr^e){Console::WriteLine(String::Format("Caught exception: {0}",e->Message));return-1;}return0;}