C语言编程求助!

发布网友发布时间：2023-05-18 01:51

共1个回答

热心网友时间：2023-09-19 19:45

#include<math.h>
#include<stdio.h>
int main(){
    const double PI=3.1415926535;
    double x1,y1,h1;
    double x2,y2,h2;
    double x3,y3,h3;
    printf("请输入A点的X,Y,H用逗号隔开:\n");
    scanf("%lf,%lf,%lf",&x1,&y1,&h1);
    printf("请输入B点的X,Y,H用逗号隔开:\n");
    scanf("%lf,%lf,%lf",&x2,&y2,&h2);
    printf("请输入C点的X,Y,H用逗号隔开:\n");
    scanf("%lf,%lf,%lf",&x3,&y3,&h3);
    double ax=(y2-y1)(h3-h1)-(h2-h1)(y3-y1);
    double ay=(h2-h1)(x3-x1)-(x2-x1)(h3-h1);
    double az=(x2-x1)(y3-y1)-(y2-y1)(x3-x1);
    double theta=acos(az/sqrt(ax*ax+ay*ay+az*az));
    if(az<0){
        theta=PI-theta;
    }
    double epsilon=acos(fabs(ay)/sqrt(ax*ax+ay*ay));
    if(ax>=0){                   //ax>=0
        if(ay>=0)
            beta=epsilon;        //ax>=0,ay>=0
        else
            beta=2*PI-epsilon;   //ax>=0,ay<0
    }else{                       //ax<0
        if(ay>=0)
            beta=PI-epsilon;     //ax<0,ay>=0
        else
            beta=PI+epsilon;     //ax<0,ay<0
    }
    theta=theta*180/PI;          //radian to degree
    beta=beta*180/PI;            //radian to degree
    printf("theta=%lf,beta=%lf\n",theta,beta);
    return 0;
}