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)
{
* * ******* ** * ****** ** 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:162.159.115.10
©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