0 like 0 dislike
3.4k 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 | 3.4k 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:172.69.7.20
©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
| 1.9k 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
| 5.9k 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
| 4.6k 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
| 2k 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