0 like 0 dislike
4.4k 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 | 4.4k 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:172.70.126.9
©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
| 5.7k 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
| 6.6k 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
| 5.3k 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