0 like 0 dislike
6.1k 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 | 6.1k 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:172.70.80.196
©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
| 10.8k 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
| 8.5k 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
| 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