0 like 0 dislike
2.6k 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 | 2.6k 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:104.23.187.2
©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
| 3.2k 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
| 3.5k 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
| 3.2k 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
| 932 views
12,783 questions
183,442 answers
172,219 comments
4,824 users