include<stdio.h>

include<math.h>

define pi 3.1415926

int main()
{ double x,y,b,l; //x，y为经纬度坐标，b，l为大地坐标 printf("请输入经度和纬度
"); scanf("%lf %lf",&x,&y); //正反算 b = (xpi/180)6371004cos(ypi/180); l = (ypi/180)6371004; printf("大地坐标为：
B=%.2f
L=%.2f
",b,l); return 0; }