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