0 like 0 dislike
6.2k 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 | 6.2k 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:172.69.17.58
©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
| 3.2k 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
| 10.9k 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
| 8.7k 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
| 3.8k 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
183,442 answers
172,219 comments
4,824 users