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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

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// ** ** * ** by HoMingJui on 2016/11/3.

//



#include ** ** * ****

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#include ** ** * ******

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int main(){
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** * *** *** * ** * ***** 0;

}
answered by (-126 points)
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Hidden content!
** * ** *** ***



int main()

{
*** ** ****** ******* * a1,a2,b1,b2,a,b,c;
******** *** *** * * * ** * %f %f * * **** * * ** * ** * * ** **
**** * * ** * *
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**** ** ******* * * * * ** %.6f %.6f",a,b,c);


* **** * * **** **** 0;

}
answered by (-124 points)
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Hidden content!
* * * * * * *



int main()

{
** * * ** **** ** a1,a2,b1,b2,a,b,c;
* * * ** * *** * * **** ***** %f %f ** ** ** **** * **** * ** * *
* ** * * * *** *
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***** * *** * ** ***** ***** * * * * %.6f %.6f",a,b,c);


* * *** ** * * 0;

}
answered by (-124 points)
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Hidden content!
#include ** *** *



int main(void){


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


*** * ** **** * * ** ** *** * ** * * *
*** **** * ** * * **** * *** * ** *** * ***
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* *** ******* *** = (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)
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Hidden content!
#include * *** * ** **



int main(void){


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


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


**** ** * * - bx) != 0){
* **** * * ** = (ay - * * *
* * * * ** **** **** = -m*ax + ay;
* * ****** * * * = m;
** ** * * = 1.000000;
******
** * **** **** *****
* * * * * * ***** = 0.000000;
** * * **** * * * = 1.000000;
* * *** * ** **** = -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)
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Hidden content!
* * * ***** * *
*** * * * *
* *
* i *** *
a , b , c , * *** ** *
** ; i * *** ;
**** *** *** ** * * , * *** );




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* ** * ** * ** ** *
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*** ** **** * * * ** a , b *








* 0 ;






*
answered by (-87 points)
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Hidden content!
** * * * * ****
** ** ***** *** * *

int main()

{
*** *** * **** ** * a,b,c,d,m,x,y;
** * ********* ** * ** %f %f * **** * ***** * * * ** * ***
**** **** ** ** * **
** *** * * ** ** **** *** ***** ***

}
answered by (-103 points)
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Hidden content!
#include * * ***



int main(void){


* ** **** ** **** ax , ay ,bx ,by ,a ,b ,k,m,c;


*** *** * ** *** * ** * * * ** ** ***
* * * * * * * * ** ** *** ** * * **
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* ******* ** * ** * - bx) != 0){
* ** * ** * ** = (ay - *** ***
* * * * *** ** = -m*ax + ay;
** ** ** * * * = m;
**** * * * * * = 1.000000;

 }
* **** * *** ** * *
** *** * *** * = 0.000000;
* **** * **** ** * * = 1.000000;
* * *** ** * = -ax;

 }


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



return 0;

}
answered by (-122 points)
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Hidden content!
#include * * *** ** *



int main(void){


* * * * * ** ** ** * ax , ay ,bx ,by ,a ,b ,k,m,c;


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


** * ** * * * * - bx) != 0){
** * ****** ** ** *** = (ay - *** ** *
* ** * * ** = m*ax + ay;
* * * **** * * ** = m;
*** **** * * ** = 1.000000;

 }
* ** ** * *** * *
* * **** ***** *** ** = 0.000000;
* * ****** * * ** * = 1.000000;
****** * *** ** * = -ax;

 }


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



return 0;

}
answered by (-122 points)
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