0 like 0 dislike
8.9k 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 | 8.9k 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:172.69.17.43
©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
| 5.9k 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
| 6.3k 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
| 12.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users