0 like 0 dislike
7.4k 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 | 7.4k 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:172.70.178.11
©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
| 4.9k 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
| 5.5k 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
| 11.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users