0 like 0 dislike
15.6k 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 | 15.6k 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