0 like 0 dislike
2.7k views
直線方程式的通式為 ax+by+c=0 ,請設計一程式,由使用者輸入平面上兩點,程式會計算出直線方程式後輸出a, b, c。

輸入說明:輸入會包含四個浮點數,倆倆之間會用一個空白隔開,四個浮點數依序代表第一個點的x座標、第一個點的y座標、地按個點的x座標、第二個點的y座標。

輸出說明:請依序輸出 a, b, c 三個常數,每個數都需輸出到小數點後六位。請確保a, b, c 間的最大公因數為1。

輸入範例:

1.0 1.0 1.0 2.0

輸出範例:

1.000000 0.000000 -1.000000
[Exercise] Coding (C) - asked in 2016-1 程式設計(一)AC by (18k points)
ID: 18070 - Available when: Unlimited - Due to: Unlimited

reshown by | 2.7k views

49 Answers

0 like 0 dislike
Hidden content!
#include <stdio.h>

#include <stdlib.h>

#include <ctype.h>

#include <math.h>



int main()

{
* ** ** * ***** ** * ** *** ********* *
**** ** * * * * * ** * *** *
* * * * * * ** *** * ** * * **
* * * * * *** *** ** * ** ** *** * * ** **
* **** *** ** * ** *** * ** **** ** **


** ** * ** *** * * ** * * (a-c!=0)
* * * ** * ** * * * ** ****
***** * *** ** * * **** * ** ** *
*** ** ** * ***** ** *** * *** **
** * ** * * * *** ** * * * *** *
* *** ** **** ** * * *
* * * * * * * ** * * * ** (a-c==0)
** ** ** * * **
* * * *** *** **** * *** * * ******* ** * *
* * * **** * *** *** * * * ** ** **** ** ** * * * ** ***
****** ** * * * * ** ** * * ** * ** ** * *** **
**** **** * * * ** ********
* * ** ****** ** * ("%.6f ",e);
* * * ** * *** ** ("%.6f ",g);
** * ** * * ** ("%.6f",f);






* *** ** ***** * **** 0;

}
answered by (-136 points)
0 like 0 dislike
Hidden content!
* * *** *




*

{
* ***** * * ** ***
***** ** * * * ** %f %f * * ** * * * **
***** *** - x2 == 0)
* * ***
* * * * * * * * = x1;
** ** * ** * * * * * = 0;
* **** *** * * ***** = -x1;
* * * ** ** * ** **** ** ** * %f * *** * **
** * ** *
**** * * * if(x1 - x2 != 0,y1 != 0)
*
** ** *** ** ** = (y1 - * * ** - x2);
** * ** * * ** * = y1 - (a * x1);
**** **** * ** * ** * * = -((a * x1) + c) / y1;
* * ***** *** ****** * * * * %f * * * ** *
**** *
* * * ** 0;

}
answered by (-100 points)
0 like 0 dislike
Hidden content!
#include<stdio.h>
******* ** *

int main (void)

{
* * * * * * ** * x1,y1,x2,y2;


* ** * * ***** * * * ** ** * a,b,c;


** **** * **** **** * * * *** %f ** ** * ** ** * *** *** **** *
** ** * * *** * **** * * *** *
* ** ** ***** * * ** ** ****** *
* * *** *** ** * * * *** ** * * * *




* * ** * ** ** * * * * * %6f %6f",a,b,1);
**** * * ** ** * ** 0;



}
answered by (-85 points)
0 like 0 dislike
Hidden content!
#include<stdio.h>
* ** * * * *
* * *** ** *

#include<math.h>



int main()

{
* * * * * **** * * x1,x2,y1,y2,m,a,c0;
** * * ** * ** *** *** * *** * * * * *
*** ******* * * ** * **** *** * **** ***
* * * * *** ****** * **** * * ** * ** ***
* * ***** * ***** * * * *** ** * ** * ** *** *
******** ** ******* ** = (y1-y2)/(x1-x2);
** * * * * * * ** * ** *** **** *** *
**** ** ** * ******** ***** ** **** * **
* * * * * **** * * ** * *** * * %f *** ** * * * *** * * * *** *

return 0;

}
answered by (-102 points)
0 like 0 dislike
Hidden content!
** ** ** * * ***


* * *** * ****


****** * * *** ***


** * * **** ** ***




** ** ( * )

{
* ** ****
** * ** %f %f * *** *** * * * * * * * * * ** **
* = d -
* = c - *
* = f * b - a * e ;
** * ** * **** *
*
**
answered by (-276 points)
0 like 0 dislike
Hidden content!
* ** * * * *
** * *** ** ** *

void rect(int ,int,int ,int,int *,int * );

int main(void)

{
* ** *** * ** ** * i, j, k, l;
* ** ** *** a,b,c;
****** *** * ***** ** ** * %4f %4f ** *** * *** * ** * *** * * *
**** * * ******* * ** ** * * * * *
* * * * *** * ** * %6f * * * ** ** **


* ** ** * * * **** * *** * * * *
*** ****** * ******** **** 0;

}
* * ** ** * * rect(int x,int y,int z,int w,int *p1,int *p2)
* * *** *** ** ** ** * ** * ** * a,b,c;


* * *** * **** * * **** * * ****
*** * ** * * * * * * ** *** * * **** * *


* * * * * *
answered by (-114 points)
0 like 0 dislike
Hidden content!
* * * **** * *


** * **
** *** *** **** ** ** ** * * * * a, b, c;


**** * * ** * *** * * * *** *** %f %f **** ** * * * *** ** * *** *** **


** * ** ** **** * = y2 - y1 / ** * y2 - x2 * *
****** * * **** * ** *** = x1 - ** / * y2 - x2 *
**** * ** * * * ** **** = - * * * - * * *
** * *** ******* * * ** * * * * * * * ** a, **


*

}
answered by (-105 points)
0 like 0 dislike
Hidden content!
* * ** ** ** *
* ** ** * *** * *
* * * * *
** ** **** ***** *






** * *

{


** *** **** * *** * **** *


* *** * * * ** ***** *** *** * * * * * * ******* ****



** ** ****** dx = (x1 - **


**** * *** dy = (y1 - *
**** * *** **

** *** ** * * m = dy / * *
* * * * ** **

* * * ** * ** h = y1 - **
* ** * *

** ** ** * a = b * h;

*** * **

* ** b =



*** * *** c = b * h;


*** ** * * * * * * ********** * * ** *** ** ***




0;

}
answered by (-157 points)
0 like 0 dislike
Hidden content!
* ** ** ** *



int main(void)

{
*** * ** *** * ** * * x1,y1,x2,y2;
* * ******** * * a,b,c;
* ** **** * *** * *** ***** ** *** ** * ****** *** ** *
* * * *** ** ***
* ** ** **** ********** ** ** * ** ** * = y2 - y1;
* ** * **** ** * ******* ** * * * * = x1 - x2;
* * ***** ** ** * * * ** * * * ** ** = -x1 * (y2-y1) + y1 * (x2-x1);
* * ** * ** * *
** * * ** * ***** %f %f",a,b,c);






*** *** ** ******* ** ** * 0;

}
answered by (-320 points)
0 like 0 dislike
Hidden content!
*** * ** *
* * * ** *** ** *

int main(void)

{
* * **** * * * ** x1,y1,x2,y2;
* ***** * * a,b,c;
* ** * ** ** ** * * * * * ***** * * * ** ** * ** **
*** **** * * *** ****
**** * **** ** * * ** *** *** * ** *** * * = y2 - y1;
*** ******* *** * * ** * * * ****** * **** = x1 - x2;
* ** ** * * ** * * **** *** * ** = -x1 * (y2-y1) + y1 * (x2-x1);
******* *** * * ***
* * * * * ** * * ** * **** %f %f",a,b,c);






* * * **** ** * * *** 0;

}
answered by (-320 points)
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.126.61
©2016-2025

Related questions

0 like 0 dislike
16 answers
[Exercise] Coding (C) - asked Dec 1, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 18075 - Available when: 2016-12-01 18:30:00 - Due to: 2016-12-01 21:00:00
| 1.4k views
0 like 0 dislike
86 answers
[Exercise] Coding (C) - asked Dec 1, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 18071 - Available when: 2016-12-01 18:30:00 - Due to: 2016-12-01 21:00:00
| 4.6k views
0 like 0 dislike
62 answers
[Exercise] Coding (C) - asked Dec 1, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 18067 - Available when: 2016-12-01 18:30:00 - Due to: 2016-12-01 21:00:00
| 3.5k views
0 like 0 dislike
21 answers
[Exercise] Coding (C) - asked Dec 1, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 18066 - Available when: 2016-12-01 18:30:00 - Due to: 2016-12-01 21:00:00
| 1.5k views
0 like 0 dislike
0 answers
[Resource] asked Dec 1, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 18085 - Available when: Unlimited - Due to: Unlimited
| 10 views
12,783 questions
183,443 answers
172,219 comments
4,824 users