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