0 like 0 dislike
7.3k 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 | 7.3k 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:162.159.115.9
©2016-2026

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
| 3.8k 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
| 13k 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
| 10.5k 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
| 4.4k 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