0 like 0 dislike
3.7k 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)AD by (18k points)
ID: 13421 - Available when: Unlimited - Due to: Unlimited
| 3.7k views

21 Answers

0 like 0 dislike
Hidden content!
** *** * *** **** * *



int ** {

float A,B;
* * *** * ****
**** * *
**** * * * * * **
* * 0;

}
answered by (-102 points)
0 like 0 dislike
Hidden content!
#include <stdio.h>

#include * *** *** **



int main()

{
**** ** *** * * **** ***** length = 0 ;
** *** * **** * **** ** * * ** ** **** * * *** *

* * * * ** * * **** ** * * *** * * * ******
**** ** * ** * ***
* ** ** * ***** * ** * ** * * * * * *
** * *** * ** * * * * 0;

}
answered by (-162 points)
0 like 0 dislike
Hidden content!
#include<stdio.h>

#include<stdlib.h>



int main()

{
** * * * * *** * * *** i = 0;
* * *** *** * ** ** ** k;
*** *** ** *** **** ***
* ****** * * **** ** *** *** **** * ** **
* * * *** ** **
* ****** * * * * * *** / 4 * (i * i);
* **** *
** ** ** * ***** * ** *** * **** *
* * * ** *** * *
* * ****** ******** *
* *** * *** *** **
* * ** * ** ** *** ** ** * * **** ** * *** *
* * ***** * *** * * **** 0;

}
answered by (-264 points)
0 like 0 dislike
Hidden content!
#include<stdio.h>
* * * ******* *

#include<math.h>

int main()

{
* *** * * ** *** ** a;
** * ** *** *** ** **** * * s=0;
** ****** * **** **
* * * ** * * ** * **** ** * * ****
* ** * * *** * * * = (sqrt(3)/4)*(a*a);
* ***** *** ***** ** ** * * *** * * * * * * *
* * ** ** * * * *** * * *** * ** *** *
** * ** * *** ** ** 0;

}
answered by (156 points)
0 like 0 dislike
Hidden content!
#include<stdio.h>

#include<stdlib.h>

#include<math.h>



int main()



{   
* ****** * ** **
* *** * * **** * * x;
* *** * * * * ***
** * * * **** ** * ** * y;
* ** * * ** * * **
* * ** ** * * *** * ******* ** * **
** **** *** * * * ***
* * * * * * * ** * * * **
* * ** **** * *****
* *** * ** * * * * ** * *** * **


** *** *** * * * **** * * * * **
** **** **** * * ** *
* ***** ****** ****** *** 0;
* ** ** **** * **** *

}
answered by (122 points)
0 like 0 dislike
Hidden content!
#include <stdio.h>

#include ** * **** * *



int main(int argc, char *argv[])

{
* ** ***** ** * ****** l,t;
** *** * * * * * ** ***** *** ** ** * * *
**** ** * * * * * ** ***
** ** * ** * * * * **** *** * ****** * * * *** **
** * *** * * *
** * * * **** ****** *****
* *** **** ** *
* *** * ******* ** 0;

}
answered by (-216 points)
0 like 0 dislike
Hidden content!
#include *** * *** *** *

#include *** * ** *

#include <math.h>

int main()

{
** * * * * ****** * a, s;
* **** *** * * ** * * * ***** *** ** ***
**** **** * ** * ******* ********
* *** **** * * * ** * *** * **


** * **** *** * ** * * 0;

}
answered by (-146 points)
0 like 0 dislike
Hidden content!
#include *** * *** ***
** * * * **

int main()

{
* * * *** * * length;
**** ** * * * ** *** * ** ** ** * * * *
* ** * **** * * ** area=0;
** * * * * * * *** **** = (1/4) * sqrt(3) * length * length;
* * * ** *** ** ** ** ** * ** ***** ** * ** area);
* * * **** * **** * *** * 0;

}
answered by (-202 points)
0 like 0 dislike
Hidden content!
#include<stdio.h>
* ** * * ***** * **

#include<math.h>



int main()



{
*** * * * **** * * * ***** ** a = 0 , b = 0  ;
**** ** * ** *** * **
* * * * * **** *** * * ** * * ** * ** * , &a);
******* ** * * * * * * * ***
* * ***** *** * ***** = (sqrt(3)*a*a)/4;
*** * **** * **
* * ** * * ** * * ** *
* * **** * ** * *** * * *** *
* * ** * ** * ** **** * ** ***** * *** , b );
** * **** ** * **** * *
*** ****** * * ** * * *** *** ** ** ** ** * *
*** * ** **** ** * * **** ** * 0 ;
* * ** *** ** ***

}
answered by (-186 points)
0 like 0 dislike
Hidden content!
** * ** ***** *
**** * * * *** ***
**** * **** * *






*
**
*** a , ***


** ** ** * * , *** *


= * *


** * *** * * * * , **





* **** ** **


*** 0;












answered by (-194 points)
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:162.159.115.10
©2016-2026

Related questions

0 like 0 dislike
23 answers
[Normal] Coding (C) - asked Oct 11, 2016 in 2016-1 程式設計(一)AD by Shun-Po (18k points)
ID: 13024 - Available when: Unlimited - Due to: Unlimited
| 4.4k views
0 like 0 dislike
21 answers
[Normal] Coding (C) - asked Oct 11, 2016 in 2016-1 程式設計(一)AD by Shun-Po (18k points)
ID: 13022 - Available when: Unlimited - Due to: Unlimited
| 4.3k views
0 like 0 dislike
54 answers
[Normal] Coding (C) - asked Oct 11, 2016 in 2016-1 程式設計(一)AD by Shun-Po (18k points)
ID: 13021 - Available when: Unlimited - Due to: Unlimited
| 7.9k views
0 like 0 dislike
3 answers
[Exercise] Coding (C) - asked Oct 27, 2016 in 2016-1 程式設計(一)AD by Shun-Po (18k points)
ID: 15398 - Available when: 2016-10-27 18:30:00 - Due to: 2016-10-27 21:00:00
| 1.3k views
0 like 0 dislike
0 answers
[Resource] asked Dec 31, 2016 in 2016-1 程式設計(一)AD by laich (937 points)
ID: 20301 - Available when: Unlimited - Due to: Unlimited
| 16 views
12,783 questions
183,442 answers
172,219 comments
4,824 users