0 like 0 dislike
12.2k views

寫一個判斷是否為質數的程式

We have the uncompleted program below:

#include <stdio.h>
int is_prime(int n)
{
   /*INSERT YOUR CODE HERE*/

   /*在這裡寫你的程式*/
   /*END OF YOUR CODE*/
}

int main(void)
{
   int n;
   scanf("%d", &n);
   if (is_prime(n))         // function return 1
      printf("Prime");
   else                     // function return 0
      printf("Not prime");
   return 0;
}

Please complete this program by only insert your code between those tags:

   /*INSERT YOUR CODE HERE*/
   /*END OF YOUR CODE*/

Remember: prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself.

You may correct the cases, but your code always be revised!

[Exercise] Coding (C) - asked in Chapter 9: Functions by (5.2k points)
ID: 35783 - Available when: 2017-12-07 18:00 - Due to: Unlimited

edited by | 12.2k views

70 Answers

0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
* *** ** ** ** i;
**** * ** **** * * **** return 0;
* *** * **** *** * if(n==2) return 0;
** * **** * * * ** * **
* ** *** ** ** *
* * *** * ***** ** ** ** **** * *** * * * ** * * **** * *
* * * * ******** * * * ****** * ** * ** ** **** **** *
*** * ** *** * **** * ***** ** * ******** ******* * ** ** ** * * ** ** * * ** ** ****** * ** * * *** return 0;
** ** * ** ** * ********* ** * ** * * *** * ** * * *** **** *
* * ****** ** **** *** ** ******* ** ** *** * * * * * * 1;
* * **** * * * *********

}
int main(void)
{
   int n;
** * * * *** * *** * **** *** * &n);
   if (is_prime(n)) * * ** * * **** * ***** * ** ** * * * function return 1
*** * * ** ***** *** **** *** * *** * *
   else ** * ** * * * * ** *** ***** *** * *** ** * * ** *** * * * **** * * * ** * * * ** ** ** * ** * * ***** ** * function return 0
* * * **** *** * * *** **** * * ** * prime");
* * **** * * * * * 0;
}
answered by (-301 points)
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
Case 3: Correct output
Case 4: Wrong output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
   int i;
*** * * * ** **** * * * * *** *
   {
* ** ** *** * * ******* * * ******* * **
* * ** ***** *** * ** * *** **** * **** ***
   }
** * **** * * * **** * *
* ** * * * ***** ** ** * ** ** ** ** * * **
* * * * * ** * ** ** * * ** *** * ** * * * ** *** * ** 1;
** ** * ** ** * ** ** * *
* * ** *** * ***** * * ** *** * **** *** * *
* * * ** * **** ***** * ** ******* ****** *
** ***** * * ** * ** * * * * * *** *** * * ** ** ** * 0;
*** *** *** * * ** **** ** * * *** * *
}

int main(void)
{
   int n;
* ** ** * * * ** * * &n);
   if (is_prime(n)) * * * * *** ** ***** * * ** ** ** * ** ** * * function return 1
* * * ** * * *** * * * ** ** ****** *** ** ***
* * * ** * * * **** *** ** * *** ** * * ** ** * * ** * ** ***** * * ** *** ****** ** ** **** * ****** * * *** * **** * * * **** * function return 0
**** ** **** * * ** * * * **** * prime");
* * * ** ***** * 0;
}
answered by (-255 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
***** * * * * ** ** ** i;
* *** * * * * ** * <= 1)
* ** * * * **** **** *** **** ****** * *** * 0;
** *** ** * * ** * ** * ** = 2 ; i < n ; i++)
* ** * * ** * *
*** *** ** **** ***** ** * *** *** * * *** * ** *** ** != 0)
** *** * *** ** * *** * * ** ***** ******** **** * * * 1;
*** * * *** * ** ****** * * * * ** * * * ** * ****
* * * * ** * * * ** ****** ** * * * **** *** * ** **** *** * * * * 0;
* ** * * ** *** **
}

int main(void)
{
   int n;
**** * * * * ** ** * * * &n);
   if (is_prime(n)) ** * * * ** * * *** * * *** * * ** * * function return 1
* ** * * ** ** * * ** * * ** ** ********* * * *
* * *** * **** ** * * * ** ** *** * * * * * ******* * * ***** * * ** *** * ** ** * ** ** * *** * ** ** ** * * * ** *** * function return 0
* * *** ****** * * * *** *** * ******* prime");
**** *** **** 0;
}
answered by (-255 points)
edited by
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)

{
*** **** * * * * ***** * flag=1,i;
* * ** *** * * ** * i<=n/2; i++)
   {
** * * * ***** *** **** **** * * * * * *** **** *
* * * * * **** *** * ** ** *
* * ** * *** * * *** * * * * *** ***** * ** * * * * ** *** **
* **** *** * * * * * * * ** **** * * ** ****** * *** *
** * *** **** * ** ******* ** **** **
*** * ** * **** *** * * ** **** **** * *
** ***** *** ** ** *** * * *** * **** * flag = 1;
   }
}

int main(void)
{
* ** *** * n;
** * *** * ** * ** * **** * &n);
   if (is_prime(n)) * * * ** ***** * * ** * * * * ******* **** * function return 1
* * * * * * * *** ** * * * *** ** * ** * * * *** *
** ** * ** ** **** * ** * * *** * ** ** **** *** *** **** ** ****** * * * * ******* ****** ** * ** * * * * ** * * ** *** *** function return 0
* * * * * * * *** * * * ******* * ******** ** prime");
** * * ** ** *** ** 0;
}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Wrong output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
**** ** * *** * * ** i = 0;

** * ** *** ** * * ***** flag = 1;

*** ** ** ** * * * <= 1)
*** *** * * ***** ***** *
** ** * * ** * * * * **** **** **** * * * * * 0;
* *** ** * ** * **

**** * **** *** * ** *** ** = 2; i < n; i++)
* * * * * ** * **** * * *
*** * ******* **** *** * ** ** ** * ** * ** * % i == 0)
* * * * ** * * ** *** * * * ** *** * *********** *
**** * * ** * * ** * * * **** ****** *** **** ** * * ** = 0;
** ** ** **** **** *** * * ***** ** * * *
** *** * ***** ***
* ** * ** ** *** ** * * flag;
}

int main(void)
{
   int n;
* *** ****** * * **** * *** * **** &n);
   if (is_prime(n)) ** ** ** * * ** * * ** ** * ** * ** function return 1
* * ** ** * ** * * ** **** ** ***** * ***
* *** * ** ****** * *** ** ** * ** *** ******* ** ** * ** * **** ** ** * * * * **** *** *** ** ** * ** * * * *** * *** **** * ******* function return 0
***** * * **** * * * ** * ** * * prime");
** * *** ** *** *** ** 0;
}
answered by (-285 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
*** * * * * * * i;
*** ** ** *** * * j=0;
* ** * * ** ** ***** * **
   {
* ** *** ****** * * ** * *** * * * *** ** **
******* * * * ** ** * * * * **
* ** ** * * * ***** ** * * **** * * * *** * ****** **** ** *** * 0;
* * ** * ** ** * * *** ** * ** * * ****
** ** * ** ** * * * * * **** ** **
** * * * *** *** * * ** ***** ** * ***** * 1;
   }
}

int main(void)
{
***** * ** n;
*** * * * **** *** * * * * ** * &n);
   if (is_prime(n)) ** * ** ** ** ** ** ** *** **** * * **** function return 1
**** * * * * * *** * *** **** * **** * * * ***
*** *** *** * * * * ** ** ** * *** * * * ****** *** ** * * ** *** ******* * ** * * **** * * * ** * * ** * * **** * * * * * * * function return 0
* ** ** ** ** * ** *** ***** * * * prime");
**** * *** ** ** 0;
}
answered by (-329 points)
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Wrong output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
* * * * * * * * flag,flagb,i;

* *** * ** * **** (n==1 || n==0)
* * * ** * * * **
** ** ** *** * * ** * * ***** * ** ** 0;
*** ** * * ***
* ** *** * ****** *
* * * * **** *** **** * ***** * *
   {
* * ** * * *** *** ***** * * ** * **** **
****** * **** * * *** **** * * * **** *
* * ** * ** *** * * * * * * (flag==0 && n!=i)
* ** * * * ** ** *** * * * *** ** * **
** **** **** ** *** * * * * *** ** ** ** * * * *** ** ****** *** * ** * * * 0;
****** * * * ** * * *** * * *****
   }
***** * * * ** (flag==0 && flagb==1)
****** ** * *
*** *** * * * * *** * **** * 1;
* *** ** ** * * **
}

int main(void)
{
*** * *** ** * * n;
*** * * * *** * ** *** * * * *** **** * **** ** * ** * &n);
* ** ** ***** * (is_prime(n))
**** * **** ** *** *** ** * * **** * * * * ***
*** * * * *** *** * ***
* * *** * *** * * * * ** *** * **** prime");
*** * * * * * ****** * * 0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Wrong output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
if(n<2)return 0;
int i,j,flag=1;
* **
* *** ** ** ** ***
*** * * * ** ** * ***** * ** * **
* *** * * * * ** * * *** *** *** * flag=0;
** * ***** *** * * ** **
* ******** ** * * ** flag;
}

int main(void)
{
*** * ** * n;
*** * * *** ** * * ****** * ** &n);
* * ***** * * (is_prime(n)) *** * ** * * * * ** ** *** ** *** * * ***** *** function return 1
** *** * * *** * ** * * *** * *** * ** * *** * * **
* * * **** ** ** * * * ***** *** * * * * * ** * * *** * *** ** * ** ** * * ** * * ** **** ***** **** **** * * function return 0
** * ** * **** * * * * * * * prime");
** * **** * **** ** 0;
}
answered by (-32 points)
edited by
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Wrong output
Case 5: Correct output
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Correct output
Case 4: Wrong output
Case 5: Wrong output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
* *** * *** * ** *** i = 0;

* * ******* ***** * * flag = 1;

*** ** ** * * * = 2; i < n; i++)
**** * * * * ** * * **
* ** * * * * ** * *** * * ** *** ** *** ** % i == 0)
** * *** **** * *** * ******** *** * *
* * * ** *** * ** * ********** *** * * ** ** * * = 0;
***** * ** * * * * ** * *** * * * ** ** * ****
*** ** **** * * ** *
* **** ** * *** ** ** * flag;
}

int main(void)
{
* * ** * * **** * n;
** * ***** ** ** ** * **** ** &n);
   if (is_prime(n)) ****** ***** * * * ** * ******* * * * ** ** *** function return 1
** *** **** * ******** * * ** * * * *** **
* ***** * * *** ** *** * * ** ** * **** * * ** * *** *** * *** * * * ******* ** ** ***** * * * ** * *** * * * ** **** function return 0
*** * ** *** * * *** * * * *** * ** * * prime");
** ** ******* * ** * ***** 0;
}
answered by (-285 points)
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Wrong output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
* ** * * * ** * ** YOUR CODE HERE*/
*** ** * * * * * * i;
* * *** * ** ** **** * * * *** 0;}
** **** * ** **** *
** ** * ********* ******* ***** ***
   {
* ** * * ** ** ** ** * * prime
* ** * *** * * ** * ** * * ***** * * ** **
** * **** ** ****** **** * ** * * * ** *** * * **** * * * ** 0;
*** ** ** * ** * ** * * * ** *** * * *
**** * ** *** *
return 1;
}
***** * * ** ** **** ** OF YOUR CODE*/
}

int main(void)
{
* *** * * ** n;
***** ** * *** * * ** * * *** * &n);
* * ** * * * * (is_prime(n)) ** *** * ** ** * ** ** ***** * * ** function return 1
* * * ** * * ** ** ** ***** * * * *** *** * *** **
* * ********* *** **** *** ** ****** * **** ** *** ** * * * * *** * * * ** ** ***** ** * * **** *** * * * * * * ** *** ** * * * ** function return 0
** * * * **** ** *** ** * ** * prime");
* ******* *** ** * ** 0;
}
answered by (-336 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:108.162.241.185
©2016-2025

Related questions

0 like 0 dislike
47 answers
[Exercise] Coding (C) - asked Dec 7, 2017 in Chapter 9: Functions by semicolon (5.2k points)
ID: 35785 - Available when: 2017-12-07 18:00 - Due to: Unlimited
| 8.1k views
0 like 0 dislike
45 answers
[Exercise] Coding (C) - asked Dec 7, 2017 in Chapter 9: Functions by semicolon (5.2k points)
ID: 35784 - Available when: 2017-12-07 18:00 - Due to: Unlimited
| 8.3k views
0 like 0 dislike
99 answers
[Exercise] Coding (C) - asked Nov 2, 2017 in Chapter 6: Loops by semicolon (5.2k points)
ID: 29829 - Available when: 2017-11-02 18:00 - Due to: Unlimited
| 17.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users