0 like 0 dislike
3.6k 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)AD by (18k points)
ID: 13421 - Available when: Unlimited - Due to: Unlimited
| 3.6k 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:104.23.243.164
©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
| 4.3k 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
| 4.1k 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
| 7.7k 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