0 like 0 dislike
7k 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 | 7k 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:104.23.243.165
©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
| 3.7k 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
| 12.3k 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
| 9.9k 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
| 4.3k 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