0 like 0 dislike
5k 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 | 5k 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:172.69.130.92
©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
| 6.3k 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
| 7.2k 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
| 5.9k 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
| 1.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users