0 like 0 dislike
18k 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 | 18k 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:104.23.243.108
©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
| 13.1k 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
| 12.2k 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
| 26.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users