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:172.70.127.115
©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
| 5.4k 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
| 1.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users