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:104.23.197.65
©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