0 like 0 dislike
12.2k 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 | 12.2k 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:108.162.241.185
©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
| 8.1k 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
| 8.3k 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
| 17.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users