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