0 like 0 dislike
3.9k 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 | 3.9k 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:172.69.214.204
©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
| 4.9k 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
| 5.8k 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
| 4.5k 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
| 1.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users