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:172.69.58.230
©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