0 like 0 dislike
5.1k 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 | 5.1k 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:172.70.80.197
©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
| 6.5k 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
| 7.4k 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
| 6.1k 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