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:104.23.243.108
©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