0 like 0 dislike
7.7k 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 | 7.7k 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:108.162.216.66
©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
| 5.1k 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
| 5.6k 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
| 11.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users