0 like 0 dislike
16.5k 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 | 16.5k 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:104.23.197.64
©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
| 12.1k 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
| 11.3k 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
| 24.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users