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:172.70.126.133
©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