0 like 0 dislike
4.4k 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
| 4.4k 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:104.23.197.95
©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
| 5k 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
| 4.9k 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
| 8.9k 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
| 1.5k 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