0 like 0 dislike
4.2k views
正三角形的面積公式是[4分之根號3乘a平方],請設計一個程式,讓使用者輸入正三角形的邊長,然後輸出正三角形的面積,輸出時請輸出並四捨五入到小數點後兩位。

範例輸入:

8

範例輸出:

21.71
[Normal] Coding (C) - asked in 2016-1 程式設計(一)AC by (18k points)
ID: 13422 - Available when: Unlimited - Due to: Unlimited
3 flags | 4.2k views
0 0
Called for Help

35 Answers

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

#include * *** * *** *

int main()

{


* **** *** * ** * A ,B;
* * * *** * * ** *** *** ***** * * **
***** ** * * = sqrt(3)/4*A*A;
** * ** ** * * * *** ** * ** * * *** *



}
answered by (-82 points)
0 like 0 dislike
Hidden content!
* * ** ***** ******
** *** * *** **





int main (void)



{
* * **** int a,i;
** * * *

* * ** * * * double * *
*** *** *** *

** * * * scanf * * ** **** *
* ** **** *

* * * * ** * b = * **
** * ** ** **

* *** * * * * c =
* * * *** *

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

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

}
answered by (-157 points)
0 like 0 dislike
Hidden content!
#include * **** * **

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

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

int main()

{
* * ** * * **** * * * ** a;
**** * * ***** * * ** * b;
** ** ** * * * *** ** **** * * &a);
* * * * ** * * * *
****** * ** * ** *** * ** ** ***** * * b);
* * * ** ** * * * ** 0;

}
answered by (-158 points)
0 like 0 dislike
Hidden content!
#include * *** * * * * *
* *** * * * ** * **
* * * ** ** *





int * *
****** * * **** **** * a,ans;
** *** *** *** ** ***** *
* * * * * * * ***** = sqrt(3) * 0.25 * a * a;
** * * * ** * *** * **** ** ans);


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

return 0;

}
answered by (-122 points)
0 like 0 dislike
Hidden content!
#include <stdio.h>

#include * ** * * ****

#include * * ** **

#include <math.h>





int main()
** * * * * * * * * * *
* ** *** ***** * * ** **** ***** **** a=0,c=0;
* ***** **** * ** ** * ** * ******** * * *****
** * * **** **** * ** ** * * * ** = * * *** ****
*** *********** * ** * * *** * * * * **** * ****
** ** *** **** * * ** ** * * ** ** *** 0;
* ****** * *** * ** * *
answered by (-216 points)
0 like 0 dislike
Hidden content!
#include <stdio.h>





int main()
***** * * **** ***
* **** ** ** * **** ** ** **** * * * a=0,c=0;
* * **** * * *** * * ** * *** ***** *** * *** * **
*** * ** *** * *** ****** * * * ******** = ((sqrt(3.0)/4.0)*(a*a));
*** * ** ** ** *** *** * *** ** ** * * **** * * *** *
***** ** * * * ** * ** * ** * * * ***** * * * * 0;
* *** ** ** * * **
answered by (-216 points)
0 like 0 dislike
Hidden content!
#include <stdio.h>

#include **** * * **

#include <ctype.h>





int main()
* * *** ***** ** ****
****** * * ******** * ** ***** ** * * ** a,b,c;
** * * *** ***** *** * * ** * * ** * * * ** * * *** ** ** * ****
*** * * ** ** **** * * * *** * * * = sqrt(3.0);
** **** * * ******* ** * * * * **** ** = ((b / 4.0) * (a * a));
*** * * * * **** * ** **** *** * * ** ****** ** * *
**** * ***** * ***** * ** ** * * ***** 0;
* * ** * * **
answered by (-216 points)
0 like 0 dislike
Hidden content!
#include * *** *** *

#include * ** * *** **

#include * ** *

int main()

{
** *** ** * ** * * a,area;
* **** ** ** * * * * ** * *** ** * *
* *** ** ** ** * ***** = sqrt(3) / 4 * a * a;
*** ** ** **** * ** ** * * ******* * *


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



}
answered by (-320 points)
0 like 0 dislike
Hidden content!
** * * * ** ** *
* ***** ** * *

int main()

{

int a = 0;
* **** ** *** * * *
** * *** ** ** *** *** *** *


** ** 0;



}
answered by (-140 points)
0 like 0 dislike
Hidden content!
* *** ***



int * *

{
* ** * * * ** * n, A;


** *** * * ** ** **** ****** ** * *** , * * *
* ** * **** * ***** = (1.732 * n * n) / 4;
* *** * ** * ** ** ***** * , A);



}
answered by (-90 points)
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:108.162.241.185
©2016-2025

Related questions

0 like 0 dislike
43 answers
[Normal] Coding (C) - asked Oct 11, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 13025 - Available when: Unlimited - Due to: Unlimited
| 5.5k views
0 like 0 dislike
49 answers
[Normal] Coding (C) - asked Oct 11, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 13023 - Available when: Unlimited - Due to: Unlimited
| 6.3k views
0 like 0 dislike
39 answers
[Normal] Coding (C) - asked Oct 11, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 13020 - Available when: Unlimited - Due to: Unlimited
| 5.1k views
0 like 0 dislike
7 answers
[Exercise] Coding (C) - asked Oct 27, 2016 in 2016-1 程式設計(一)AC by Shun-Po (18k points)
ID: 15399 - Available when: 2016-10-27 18:30:00 - Due to: 2016-10-27 21:00:00
| 1.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users