define1.h

计算子午圈半径M 计算卯酉圈半径N 计算玮圈半径r 计算经线弧长Sm 计算纬线弧长Sn 计算球面梯形面积 计算最大角度变形 计算球面极坐标

#include <process.h>
#include <fstream.h>
#include <conio.h>
#include <stdlib.h>
# include <math.h>
double a=6378245;
double e2=0.0066934216;
const double PI=3.1415926;

struct position
{
	double a;
	double Z;
};
struct position0
{
	double p;
	double a;
};
struct position1
{
	double x;
	double y;
};