0 like 0 dislike
7.3k 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 | 7.3k views

70 Answers

0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
******* *** * ****** ** * **** flag=1,i;
******* * ** * i<n/2; i++)
   {
** ***** **** * * **** ** * * * ** * * * * **
* * ***** ** *** ** * * ** * ** * **
****** *** * *** ** * * * **** * **** * ** * ** ** * **** *
***** **** ****** *** *** * * * ***** * ****** ** * * ** * ***
** ** *** * * ** * **** *** * * *** **
*** * * * * * * * ****** * ** **** * ***** *
***** * ******** *** *** **** * **** * is_prime(n);
   }
}

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: Wrong 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: Wrong output
Case 5: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
** *** * *** * flag,i;

** * * * ** * **
   {
* * ** * * ** * ** ** * *** * ** * * * *
* ** * * ** ***** *** ** ** * * * * ****** (flag==0 && n!=i)
*** **** * *** * * ** * * * * **** *
** ** ** * * *** * ** ***** ** * *** ** ****** * **** 0;
* ** *** * * *********** ** * **** * *
   }
*** * * ***** ** * (flag==0)
*** * * *** *** * * * *** * ** **
* **** ** *** * * * ** * * **** ** * * * *** ** * * * 1;
* ******* **** ** ** ** *** * ****
}

int main(void)
{
** * * *** *** n;
* *** * **** * * * *** ** * ** *** *** * * * &n);
** ** * * ** * (is_prime(n))
** * *** * **** * * ** * ** ** *** *
* ** *** ****
* * * * ** * * ** * * ** * * * * ** * prime");
** * ** * * ** * ** ** 0;
}
answered by (-249 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
prog.c:18:1: error: expected identifier or '(' before '}' token
 }
 ^
0 like 0 dislike
Hidden content!
#include <stdio.h>
int is_prime(int n)
{
* **** * * * * * *** a;
* * ** * * * *** **
** ** * * * ** * ** **** *** *** *** * * * * *** 0;
* * ****** * ***** ***
* * ** ** * * *** * ** *** ****
* * * * * * * ** *** * ** * *** ** ** **** **** *****
*** * * * ***** *** *** ** * * ** ** ** *** * 1;
* ** * * *** * ** ** ** * * *** * ** ** *** if(n%a==0)
* * * * ** **** ** **** ****** * **** * * * ***** *** ** * ** * * * 0;
* ** * * *** **** * * **** ** * *** * * * *
**** * ** ** ** *** ** ** *** **** * * ** * * * * * * * ** ** 1;
**** ********* ** **
}

int main(void)
{
   int n;
* *** ** * * ** * * * ****** **** *** &n);
   if (is_prime(n)) ** * ** * * * ** *** * * *** ** * *** ** function return 1
* *** * * * * * ** * * ***** * * *** *
   else ** ***** * ** * * ** * ** ** ** ** * * * **** * ** ** ** *** ** ** * * * *** * * * *** *** * * **** * ** function return 0
***** *** * ** * *** *** * ** ** ** ** prime");
   return 0;
}
answered by (-498 points)
edited by
0 0
Case 0: Correct output
Case 1: Wrong 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: Wrong output
Case 4: Wrong 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 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)
{
* *** * * * * d;
**** * * ** ** * (d=2;d<n;d++)
* * ** ** *** * *
****** * * ** *** * * * * **** ** ***
*** ** ****** ****** * **** ***** *** * * *
   }
**** *** *
* * * **** **** 1;
***** ******* * **
** ** * * **** * ** 0;
** **** ** * * ** YOUR CODE HERE*/

** * **** * **** ** * * ** *
** ** ** * ****** OF YOUR CODE*/
}

int main(void)
{
** *** ** * * * *** n;
** ** * ** * *** ** *** * * ** * * &n);
* * ** * * *** * *** (is_prime(n)) *** * ** *** * ** * * * * ****** *** function return 1
** ** ** * * * *** * ** ** **** * * *** *
**** ** * *** * ** * * *** ** * * ** * * *** ** *** * ** * *** ** * * * ** ** * * * ** ** * ** ** * *** * * ** * ** ** * ********** function return 0
* * ** * ** * ** * * * * * * ****** * ** prime");
*** *** * * * * 0;
}
answered by (-196 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)
{
*** * * * ** *** * YOUR CODE HERE*/
* * * **** ** * i;
* * *** *** * ** * ** * **
   {
** * ** **** * *** * * 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: 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)
{
** * ** * **** ** * i;
** * * ** ** * **** * ** ***
* ** ** * **** ** ** * ** * *** ** ** ******* ** * * 0;
* ** ** *** * * * *** *
* ** ** ***** ** ** ****** ****** ** ******* * 0;
* * **** * **** ** * **** * *
** * ** ** * * *** * ** ** ******* ** *
***** * * *** * ***** ** ** * ** ** *** * * **** 1;
** * * *** * ** * * * * * ** ** ** * if(n%i==0)
* **** ** * **** * **** * * **** * ** * * * * **** * *** ***** 0;
** *** * * ** ***** *
}

int main(void)
{
   int n;
* * * * * * ** ** ** ******
* **** ** * *** *** * **** ** ** *
* * ** * ****** * * * * * * *** *** ** ** **** * * * * ",n);
   }*/
** * * * * * * * * * * *** ** * *** &n);
   
   if (is_prime(n)) *** ** * ***** * * * *** **** * ** * **** function return 1
* * ** * * * **** **** * ** ** ** ** *
   else * ** * * * ** ** * ** **** ** * * ** ***** * * ** * * ************ * * * ** * ** *** * ** * * function return 0
**** ****** ***** * **** * *** ** * * * * * prime");

* ** * ** ** 0;

}
answered by (54 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 * ** * ***
int is_prime(int n) {
* ** * ** **** **** * (n<2) return 0;
** * ** * * ** **** ** flag=0;
*** ** * * ** * * * ** ****** i=2; i*i<=n;i++){
* ****** * **** * * * * * * * * * * *** * * * (n%i==0){
** * * * * * ** * ** * ** * * * * ** * *** * ** * * * ******
* ** * *** *** ***** ** * * ** ***** ** *** ** * ** ** ** * * ****** ** * **
*** *** * * * * * * * * * * ** * * **
*** * * * * * *
*** * *** *** * ** * ** ** * !flag;
}
int main(void) {
* ****** * * * **** * n;
***** * * * * **** * *** * ** **** ****** &n);
* *** * * * ***** (is_prime(n)) *** * ** * ***
* * ** * ** * * * * printf("Not prime");
* * * * * * * * ** * ** 0;
}
answered by (-116 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 ** * ** **** ** *
int is_prime(int n) {
** * * ***** *** ** **** (n<=2) return 0;
* * ** * ** ** * ** *** flag=0;
* * * *** **** * * * i=2; i*i<=n;i++){
* * * * * ** * **** ** *** * * ** ** (n%i==0){
* *** * * ** ***** * * * * * * * * ** **** * * **** *** *
* * ** ***** ** *** **** * ** *** * * * * * * ******* ******** **** **
* * **** **** * ** * * *** ** * *
*** ***** ****** *** ***
** ** ** *** * *** * * * !flag;
}
int main(void) {
* *** * *** **** *** ** * n;
* ** * * ** ***** * **** ** *** ** *** * &n);
* ****** ** * * ** * (is_prime(n)) * *** * * *** * *
* * * * ** *** ** **** printf("Not prime");
** * * * * * ** * **** * * 0;
}
answered by (-116 points)
0 0
Case 0: Correct output
Case 1: Wrong 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:172.70.126.60
©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
| 11.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users