0 like 0 dislike
18k 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 | 18k 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:104.23.243.108
©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
| 13.1k 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
| 12.2k 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
| 26.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users