0 like 0 dislike
3.1k 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 | 3.1k 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:172.71.1.191
©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
| 3.8k 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
| 4.4k 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
| 3.6k 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