0 like 0 dislike
14k 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 | 14k 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:172.69.17.67
©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
| 9.8k 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
| 9.6k 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
| 21k views
12,783 questions
183,442 answers
172,219 comments
4,824 users