0 like 0 dislike
2.8k 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 | 2.8k 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:172.69.7.63
©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
| 3.4k 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
| 3.9k 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
| 3.4k 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
| 1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users