0 like 0 dislike
3.3k 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 | 3.3k 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:172.71.254.95
©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
| 4.1k 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
| 4.8k 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
| 3.8k 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
| 1.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users