0 like 0 dislike
8k 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 | 8k views

70 Answers

0 like 0 dislike
Hidden content!
#include ** * * * * *
int **** * n)
{
* * * * ** * **** ** YOUR CODE HERE*/

* * ** * ** ** ** i;
* ** ********* * *** **** ** *
* * *** * ** *
* * * ** * *** * ** * * *** **** * * *** if(n%i!=0)
*** ** ** **** * ** *       {
** ** * * * * * **** * *           return 1;
*** *       }
* * *       else
*** *   * *** * ** {
*** ** ***** ** * ** * ** * ** ** ** * return 0;
* * * * * ** * * * }
*** ***** ** *
***** ***** * *** *** * ** **
** * *** * ****
** ** * ** * * * * return 0;
***** ** ** *
* ** * ***** ** ** **
** *** * *
* ** ** * * * ** ** ** *** return 1;
** ** * **

***** ** * * * ** OF YOUR CODE*/
}

int ****
{
* * * **** * ** * n;
* * ** * ** * *** ** **** ** * * *
* * ** ** * * ** ***** * ** ** * *** * * * * ** ** * * function return 1
**** ** *** **** ****** * ** ** ** *********
* *** *** ** *** * **** *** ** * * ************ * * * * ** *** ** *** *** ** * ****** *** * **** ****** * ****** ***** ** * * * * *** function return 0
***** ** ** ** * ***** * * * ** * *** * * * * **** *
* *** * * * * * * * 0;
}
answered by (-249 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: Correct 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: 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 ** ***
int ** * * n)
{
** ** * * * * * YOUR CODE HERE*/

* * * * *** * * ** int i;
* ** *** ** ** if(n==2)
****** *** *** * * * * * * {
* * **** ***** * * * * * **** return 1;
*******   }
* * ** *** **** **   ***** * *
* * * * *   {
*** * ** * **       if(n%i==0)
** ** ** *** * ***   *** ** ***** * * *
* * * * * * * *** *** *** ** return * ** * ****
* ** * ** * * * * * * }
* ** * * ** ******  
  *** }
* * * * * return 1;
****** * * ** ** ** OF YOUR CODE*/
}

int main(void)
{
* ** * * * ** * ** n;
* ** * * * ** ** * * * * ***
** * *** * *** *** * * * ** * ** ** ** * *** * ** * **** * *** ** * ** function return 1
** ** *** * * * * * ***** * * ** **** *** * ** ** *** ** * *
** *** ** * * * ** ** *** * * ** ** * * **** * * * * * * *** * * **** *** * * * *** *** * * ** ** *** * * * ** *** *** ** ** ****** * **** ** function return 0
* * * * * * ** **** ** * * * ** **** * *** * * * **
**** * * * *** **** 0;
}
answered by (-249 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)
{
* * * *** * *** * *** ** ** j, flag = 1;

* * ****** * ** * * * * j <= n/2; ++j)
* * * * ** * ** ***
** * * **** ***** * * *** ** *** * * * *** (n%j == 0)
* * ** ** * ** *** * *** *** ** ** * * **
*** * **** * *** *** * ** ** * * ** *** * ****** ** * * =0;
* * * ****** ** **** ******** * ** **** * * ** ** ** ** * * *
** * * * ** ** * *** * ** ** * * * *
* * ** * * * * *
* * * ** ** ** * ** flag;
** * * *** **** * *** * YOUR CODE HERE*/

* * * ** * * * ** * * ***
* * ** * * * * * OF YOUR CODE*/
}

int main(void)
{
   int n;
** * * * * ** ** * *** ** * * &n);
   if (is_prime(n)) ** * * * * *** ** * * * * * * * *** ** ** * function return 1
* * ** * * * * ****** * * * ** * ** * ** *****
* * ** ** * ** **** * * * * ** **** ** * * * * **** ** * * ** ** * * *** * **** ***** ** * **** function return 0
* ******** * * * * * *** * * *** * * prime");
* * * * * ****** *** * 0;
}
answered by (-167 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 ** * *** * **
int ** n)
{
** ** * **** * * YOUR CODE HERE*/
**** * *** ** * int i;
* *** ** * * int p=1;
*** *** * * ** ****** ***
**** * * * {
* * *** * * * * * ** ** *
* ** * * ** **** * {
* * * ** *   *** *   return 0;
* * *       }
* *     *** ** ****
** ** ** ** * * * * {
* ** * * * * * * * * ** * * ** p=0;
* * **** ** * * **** ** }
* ** * * * * ** return p;
**** *     ** *
******* ** }
**** **
******** *** * *** OF YOUR CODE*/
}

int main(void)
{
** * *** * * *** ** n;
* *** ***** * **** ** **** * * *
******* ** * * ** *** *** ** ***** * * * *** * * *** ** * ** * * * * function return 1
** ** *** * * ** ** ** * *** * ** **** *
* * ** * * * * * ** * * ****** ***** * * * * ** * * * * * * * * * * * * * * **** *** *** function return 0
*** ******* * ***** ** ***** * *** * *** * * ** *
* ******* * *** ** *** * 0;
}
answered by (-249 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 **** * * **
int * n)
{
** ** * * **** ** YOUR CODE HERE*/
**** * * int i;
* *** ** int p=1;
* ****** *** * * ** * * ***
** * * * * ** {
** * * ** * * * * *** *** ***
** * * * * *** * * * * {
*** ** *** * **** *   * ***   return 0;
** ** *       }
* *     ** * * ** * *
*** * * *** * * * * {
* ** ** * * *** * ** ** * * p=0;
* * * ** * * * * }
* * * * * * ** * * return p;
* * *     **** *
* ** * * }
* ** ** * * * * *
* * **** ** ***** * * * * OF YOUR CODE*/
}

int main(void)
{
** * *** * ***** ** n;
* * * ** **** ** * * * *** *** * *
** ** * ** * * * ** * * ** * ******* *** * *** * *** ***** * *** function return 1
** **** ** ** ** ** * * * * ** * *** * ** *** * **
* ** ** * * * * ** * * *** * **** ******* * ** * ****** * *** ** * ** *** ** * ** * ** **** * *** * *** ** ** * function return 0
** ** * * ** * ** **** ** *** * **
*** ** * * * ** 0;
}
answered by (-249 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 * ** *** ***
int * * ** n)
{
* ******** * *** **** YOUR CODE HERE*/
*** *   int i;
* *   int p=1;
** ** ** *** * ** *** **
* ******   {
* **       if(n%i==0)
* **   * * *** **** * {
* * * * * ** * ** * ** * * p=0;
***** * ** * ** * **** * }
* ** * *** ** *** return p;
** **** ** * **
* ** * * }
* *** * * * ** * *
** * ***** ** ** OF YOUR CODE*/
}

int *
{
* * * ** *** n;
** * *** ** * * ** ** * *** ** ** * * *** **
******* * *** * * ** ** * ** ***** * * *** ** ** ** ** * * ** ***** function return 1
* * *** * * ** * *** * * ***** * ** ** ** *** ** ***
* ** * *** ** * * ** * * * * * ** **** * ** ** * * ** **** ** ** ***** ***** *** ***** ** * * ** ** * * * ******* * ** ** ** ** * * * function return 0
** *** * ** **** **** * * * * **** * *** * * *** *** **** *
** ** ** * * ** * 0;
}
answered by (-249 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;
* * * ******* ***** * * * === 1 || n == 2 || n == 0)
** * *** *** *** * * ** * ** * ** ** * ***** ** 0;

* * * ** * *** * ***
***** ** * ** ******* ** * **** ** * * * (i=2; i<n; i++)
** * * * ** **** * ** ** ** * * * ** **** * * * *
* ***** * * *** * *** * *** * ***** * * * * ** * * *** ** * (n % i == 0 && i != n)
* ** ** ** * * ******* *** ** ** ** ** * * * ** * ** ** * ** ** ****** *** * * *** *** ****** 0;
* *** * * *** * ** ** *** ** ** * ** **** *** *
    }
*** ** * * * * * *** * * 1;
* * * ** ** *** ** OF YOUR CODE*/
}

int main(void)
{
* * * **** ** * * * * * n;
* * * * * *** * ** ** * * * * **** * &n);
***** ** * * (is_prime(n)) ** ** ** * * ** *** * **** **** ** ** **** function return 1
* **** * **** **** ** ** * ** ** * * * * * * * *** **** *
* * * ** ** * * ** * ** * *** ** * ** * ******* ****** * ** * * * * * * * * * * ** * * ** * ** * * * *** * **** ***** function return 0
*** * * * **** * ** * ************ * * * ****** ** * prime");
* ** *** ** ** *** ** * 0;
}
answered by (-233 points)
0 0
prog.c: In function 'is_prime':
prog.c:6:12: error: expected expression before '=' token
     if(n === 1 || n == 2 || n == 0)
            ^
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
* ** * *** *** i;
** * * *** **** **
***** **** *** * * * * **
** * **** * * ** ******* * ** * ******* 0;
******* * ****** * ** 1;
}

int main(void)
{
* ** * ** ** * * ** n;
* ** * * * * *** * * * * *** &n);
********** * * (is_prime(n)) * ** * ** ** *** * ** * * *** * * ** * ** ** function return 1
******** ** ****** *** * ** ** * ** *** * **** ** ***
** * * ** ** * *** ** * * * ** * ** * ** * *** ** * * *** ** ** * * ******** * ** ** *** * * * * * *** ** ** function return 0
* * ** * ** *** * ** *** * ** * ** *** *** prime");
** ****** * * 0;
}
answered by (-16 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)
{
** ** ***** * * i,ans;
* * **** *** * ** *
   {
** * * * * ***** * ** ******** * ***** * * * ***
** * ** * ** ** *
* ** * ** * ** * * * * **** * * **** **
** * *** *** ** *** * * ** * ** ****
** * ** * ** ***** * * * * **** **** *** **** * ** 1;
* ***** ****** * * * * * *** * **** if(ans==0)
* * * *** * * * ******* **** *** **** ******* 0;
   }
   }
* *** *** ** ***
**** * * * *** * * 0;
}
int main(void)
{
* * * * * * * * * n;
********** ** * ** ******* * * **** * ** ***
* ** * *** * * (is_prime(n))
*** * * * * * * *** * **** * ** * * ******
**** * * *** *
* *** *** * * * ** * ** ***** * ** * **** prime");
* *** *** * * * * 0;
}
answered by (-258 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,ans;
** **** ** * *** ** ** *** **
   {
* * **** ** ** * ** * ** ** ** ******* * ******
* **** ** ** * *
*** * **** * * * *** * * ** *
** * *** * * * * ** * * ** **** *
** *** ** * * * * * * * * **** * * ***** * * **** 1;
***** * * * ****** * **** * * if(ans==0)
** * * *** * * * * * * * * ****** * * * 0;
* * ****** * **** *
   }
}
int main(void)
{
* ** * ** ** * n;
* * *** * ** * * **** * ** ***
* ** * * * * * (is_prime(n))
* * *** ** * * *** *** ***** *** *** *** * *
* * *** *** * *
* **** * ** * * ** *** ** ** **** *** *** prime");
*** * * *** * *** * ** 0;
}
answered by (-258 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
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.17.200
©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
| 5.3k 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
| 5.7k 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
| 11.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users