第 3 題 - 解答

#include <stdio.h>

#include <math.h>

int main()

{

    double x1, y1, x2, y2, distance, slope;

    printf("請輸入第1點座標(x1,y1):");

    scanf("%lf,%lf",&x1,&y1);

    printf("請輸入第2點座標(x2,y2):");

    scanf("%lf,%lf",&x2,&y2);  

    distance=sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));

    slope=(y2-y1)/(x2-x1);

    printf("兩點的距離=%.2f\n",distance);

    printf("兩點的斜率=%.2f\n",slope);

    return 0;

}

#include <stdio.h>

#include <math.h>

int main()

{

    double x1, y1, x2, y2, distance, slope;

    scanf("%lf,%lf",&x1,&y1);

    scanf("%lf,%lf",&x2,&y2);  

    distance=sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));

    slope=(y2-y1)/(x2-x1);

    printf("%.2f\n",distance);

    printf("%.2f\n",slope);

    return 0;

}