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:172.71.254.192
©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
| 6.5k 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
| 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