How to create instance of struct in Objective-C that was defined in C file -

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in xcode have c classes contains following definition:

typedef struct {     double x;     double y;     double z;     coordunit unit; } yg     #define ygmeterpoint(x,y,z) __ygpointwithunit(x,y,z,meter)

this used follows in c:

//declares origin point , translated point ygpoint point = ygmeterpoint(994272.661,113467.422);  //converts point in lambert zone 1 wgs84 point = ygpointconvertwgs84(point,lambert_i)  //convert degree point = ygpointtodegree(point);  printf("lat:%.9f - lon:%.9f",point.y,point.x);

but call using objecive-c in xcode. how that?

like @martin r said, can't see why need/want this article explains how it. @ example 2.


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