0 like 0 dislike
15.5k 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 | 15.5k 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:104.23.243.165
©2016-2026

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
| 10.9k 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
| 10.5k 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
| 23k views
12,783 questions
183,442 answers
172,219 comments
4,824 users