0 like 0 dislike
4.1k 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 | 4.1k 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:172.69.130.80
©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
| 5.2k 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
| 6k 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
| 4.9k 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
| 1.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users