0 like 0 dislike
12.1k 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 | 12.1k 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:172.71.255.49
©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
| 8k 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