0 like 0 dislike
4.4k 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 | 4.4k 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:172.70.80.20
©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
| 5.7k 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
| 6.6k 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
| 5.3k 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
| 1.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users