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:104.23.197.94
©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