0 like 0 dislike
1.7k 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
| 1.7k 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:172.71.254.51
©2016-2025

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
| 2.2k 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
| 2.1k 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
| 3.8k 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
| 649 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