0 like 0 dislike
5.6k 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 | 5.6k views

49 Answers

0 like 0 dislike
Hidden content!
* * * ** ** **** *


**** **** * * *


* * ** * * *


* **** * *** *




* * (
*
* ***** * *
* * * * * ** ** ** * * ** *** ** *
* = d -
= c - *
** = f * b - a * e ;
* = 0 -
**

**** ***** * * *** **** * = - * * * * *



* **** * * * * ** *** *
* * *
answered by (-276 points)
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!
#include * * **



int main(void){


** ** ** * ** **** ax , ay ,bx ,by ,a ,b * ** *


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


*** ***** * ** * - bx) != 0){
** ** * ** * * ** = (ay - * ****
* * * ** ***** **** = -m*ax + ay;
**** ** * *** = m;
** ** * **** ** = -1;

 }
********** * ****
** * * * ** ** * = 0;
* **** * **** * = 1;
*** * * ** ** = -ax;
* * *


*** ** * * * = a;
**** ****** ***** ** = b;
* ***** *** = c;


***** * * < 0)
**** * * * * * * * = -i;
** * *** if (k < 0)
* * ** * * * * *** = -k;


* * * (i < 1){
** *** * * **** ***** = 1/i;
* * *** *** ****** * = a*g;
** * ** *** *** = b*g;
*** * * *** * * * = c*g;
* * ****
*** if (k < 1){
*** * * **** * * * * = 1/k;
* * *** ** * * * = a*g;
** *** *** * *** = b*g;
** ** * * *** ** * = c*g;
* **
* * * * **** ***
* * ** * * * * **
** ** * * * *** * *



return 0;

}
answered by (-122 points)
0 like 0 dislike
Hidden content!
** * * *


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


* * * * ** *


** * ** * * * * **




* * ( * * )

* * ***
** ** **** * * * * *** * ** ***** ***** ** * ** *
** =
* = c - *
= f * b - a * e ;
= 0 -
* * *** *
*
* ** * * *** * ***** * ** ** = 0 - ** = 0 - = *

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




****** * * * * ** * * ** *
*** *
*
answered by (-276 points)
0 like 0 dislike
Hidden content!
#include ********





int main()

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








* * * * * ** ** * * * *** * * * %.6f %.6f",a,b,c);

}
answered by (-162 points)
0 like 0 dislike
Hidden content!
** ** * * * **


* * *
** * ** * * * * * * ** *** * t = 0, a, b, c, a1 , * *


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




********* *** *** * ** **** = y2 - y1 / * * y2 - x2 * **
*** **** *** **** * * ** = - / * * - * *
** * * ******** * ** = - *** * - * *
** * * * * ** * ** * * = a /
* * ** ***** * * *** = b / c;
** *** * * * * ** * * * * * * * * ** ** * ** * *


** 0;
answered by (-105 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 <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!
** *****





int **

{
** **** * **** * *
* *** * * * * %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!
* ** ** ** * *


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


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


** * ** * * * *




* ( ** )
*
* * * ** * ** **
* * *** **** * * * * * * ** *** * **** *** ** ** *
= d -
* = c - *
* = f * b - a * e ;


* ** *** *
*
* * **** ** **** *** * = 0 - * = * -
*


* * **** * * ****
**
answered by (-276 points)
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.231.96
©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
| 2.9k 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
| 9.6k 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
| 7.7k 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
| 3.4k 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