Final Exam 2 (20%)

1 like 0 dislike
10.6k views

A string p is a prefix of a string s if the leading characters of s are identical to p. For example, "abc" is a prefix of "abcde". Develop a function prefix that checks if a C string p is a prefix of another C string s.

p是s的前綴若s開頭的一段字串等於p。例如，"abc"是"abcde"的前綴。寫一個程式 判斷字串p是否字串s的前綴。

Example input 1:

abc
abcde

Example output 1:

abc is a prefix of abcde

 

Example input 2:

bc
abcde

Example output 2:

bc is not a prefix of abcde

 

[Exam] asked in Final Exam
ID: 42299 - Available when: 2018-01-17 14:00 - Due to: Unlimited
retagged by | 10.6k views

37 Answers

0 like 0 dislike 
Hidden content!
#include      *  * ** *
#include  *   * *  *   *  
     * *  *       * 
** ** * *   **     ** 

int prefix(char a[], char b[]){
int i, j,n;
int cnt=0;

n= *** ****** *   *

**    *  *      **   **  ***  * *
** **  ** * ** *    *   **  * * * == b[i]){
 ****  *******    * *** *     **  * ** * *   ***    * * * ***
* *  *** *** **    * *  ****  ** 

  ****  * * *   **  * 
if (cnt == n){
 **  **  **       * *** *  *   ** ***  ** *  ****    **   ***  * 1;
  *       *  *****  ** **    ***    *       * *  *   ***   
 * *** *   *   **  ** *   *** * *
***     **  * ** *     * *  *** *  * * * *   * ***   ** * * 0;

}

int main()
{
    *  **** *  **  * *    s1[100], s2[100];
 *** *  * *        ***   * i,j;

** *******    **** * *** * **   **** **   s1);
***    *   * *** *  *** * *   *    *     *    s2);
 ** * ***   ** * *  (prefix(s1, s2)){

*** *   *  ***   *  *   ****    *** * ** * ******  *  ***** is a prefix of %s", s1,s2);
*    **   * *** ****** ****  ***  *   
* * **   * *  ** ** * * *** *  * * *  ** **  *
*  * * *  **  ** **     * *          *  ** * *    *  ** **   *** ** **  * *** is not a prefix of %s", s1,s2);



}
answered by (323 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
  **  *  * * ** * **     *  *   c;
 * ** *  *  * * * * *    * * a[100],b[100];
* ** ****       *    ** **** *  **     %s",a,b);
 ** * ** *  * ** ***  *   * **   ** * ** ** *
 * *  *    ****** *  **  ** ** *  ** **    ***** * ***  * ***   * 0;
 * **** * *  **** *  * * ***  **  * ** %d",strlen(a),strlen(b));
 *  ***  **     * * **** * *    *** **    *  ** 
*** ** **  ** * *** * **** * * **** * *  **    * **  *  *   ***      ***  ****  *      **  * * * *  *   * 
 ** *    ** ** ** *   ** *****    *  * * * ****  **  * **  * *** *** ***   * **  * *  *  ** **  * *** **** ** * * *   ** is not a prefix of %s",a,b);
   *  * * *   **  **  *  ***  *      *  * ** *** *** ****  * * * *   *  *   ** **** * **  **** *    ** * * **   
 ** ** **  *   * ****    ***      *** *** *  * *   **    * *  *   **** * **  ** * **  *
  ** *   *****  ****   *    *  * **** *     ** * **   * *    *  **     **  if(c==strlen(a)-1)
   *        ********* ** *** *** **  * **  ** * * *** **** ***** *          ****  *   **   **  * *  ** * * **   * is a prefix of %s",a,b);
    }
  *   **  ** * **** * * *** 0;
}
answered by (-498 points)
edited by
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
** ***   *   *  * *  *  *** ** n,count;
***   ** *    **  * ** *    **   *      **      **  
 ***** ** *   * *  **  * ** ** *****  %s",a,b);
***** **** * *   *  ****    ****

*   *  **  ***   * ** * * *** **         *  *      *** * 
   * ***  * ******    **  
   * *** *    * * * * ***  * **  ***  *   *        ***   **   * 
*  *    * * ***** ** **    * *

 *  **** * * ***  * * * (strcmp(a,c)==0)
***  **  ***  ** *   *
 * * **    **  **   *  *** *   * *     * **** **  * **        ***   is a prefix of %s",a,b);
** ** **  ****** *   **  *  **
**** **  **    * * ***  **        
* ** *   *    * ** *****    *
***  ****  ** *  * * * **** **    *   * *** * ******  **   *  *** **** is not a prefix of %s",a,b);
 *  *    *  *      *  *  * ***** 
 * **  * *  * *  *  *** *  *** *    0;
}
answered by (-284 points)
edited by
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s %s",&prefix,&word);
             ^
prog.c:8:16: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s %s",&prefix,&word);
                ^
prog.c:10:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(prefix);++i)
               ^~~~~~
prog.c:10:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:10:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:18:6: error: expected '(' before 'printf'
      printf("%s is a prefix of %s",prefix,word);
      ^~~~~~
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
 * *      *  *  ** ** ***  a[100],b[100];
* *  ** * ****** * * * ***  * ***** ** *** ****** **** 
    int l1,l2;
   ****  ** *   ** *** * **** **  *** 
  ****** *  *** *      ** ** ***** * 
** * ***** ** ****  **   * ***** *   **
 * *      *****    **  ** ****  *     * * **  *** ****  **** *  is not a prefix of %s",a,b);

    }
 ** **      **   ** * ** ***  * *  * * if(l1<=l2){
*  ****  * *** **  **  * *   ****  *   ***  ** ****** *  **** prefix=1;
  *  ** *** *** *      * ** ****** ***** * *  ** *  *****   i=0;
 **********    * ***  * ** ** ** ** ** *   * **      **  **   *****  * * *
**  ** *   **       *   * ***** **  **  * ***     *   *  ** ******* *  **** *  (a[i]!=b[i]){
*   **** *  *    * **  **  *  *    * **** *    *****  **  * *     * *  *  **  * ** **   * **** *
* **   * **   ** ***   ***  **  *   *  ***    ** ***    * *  *     ***   ***  * *  *   * **** ** *  ** **  ***  ****
** *  * ** * *** ****   * * ** ***   ** **   ** * * *  *  **  * * *** **    ****** 


* ****   *  * **  **  * ** *** *****     *   *   ** *** **   * **
 *** *   ******   *   **   * ** *** * ****  ***     **    * *** **  
*** *  **** ***   ******* *  * **   ***   * ******  *  * *  * ** *  ****  **   *** ** *  *  **   *** is not a prefix of %s",a,b);
 * ** ******  *   * * **  *********  ** *  * *****  
  *  ** *     *   *    *** ***       ** ** *   *   *   
*  ** * ** *      ** * *     ******   *  * *** * * ** **** *  is a prefix of %s",a,b);


    }


}
answered by (-329 points)
0 0
prog.c: In function 'main':
prog.c:5:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:5:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
prog.c:7:8: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     l1=strlen(a);
        ^~~~~~
prog.c:7:8: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:8: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:6:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:6:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
*   ** *   * *   *  *  *
int main(void)
{

* ***   * *  *   * *  *    pre[100];
     *******     ***  *  *   word[100];
* ***  ***  * ***    * *** ** *  ***    %s",pre,word);
** * **  ** *** * * ***** *    *  * *  ** * **
   *     *   **    * * * *    ****  *      ***

 *     *    ***  *    * **   i;
     ******    ** *  **   *    * *** ** *** **    * *
  ***       ***  *   *    **   
 * ***       ** * **  ** **  * **   * **  * *   **   * ** ** **** *** **
  * * **   **    *      **** ****    **  ** * * *  ***  ** 
  **      ***  *** * *   *** *** ** **   ******** *   *    *   * * * ***      **    * * ** ** * *  is not a prefix of %s",pre,word);
  * ** ****   *   **           **    *   * **  *** * *   **   * ****  *****  ***   *  *    0;
*   **** ** ********* * *   *   * **  ** **  *  *   ***   *    *

 ***  * * *  *    *  ***  
printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 points)
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
commented by (4.3k points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main ()
{
 *  * **** * ****  *  ** ****  **** pre [100],a[100];
      *    * * ** * *   * n ,i;
*  ****** * * **  * **  *    * *    ***  
 * * *** * *****      *  ** *** ***
 ***  * **  *  * *   *** ***    *  **    * ***  *    *
* * ** * *  **    ***  * ** *
 ******* ** ** * ***  ***  **  **  *** * *  * * ** * (n=0;n<strlen(pre);n++)
  *   * *  *  ******  **    ***** * ** * * **    *
****     * **  *     *     **     **** ** * *****   ** ****   * **   **  ** *  *  **  *  (pre[n]==a[n])
 *     **    ** ** **  * ** *  * * * *   **  *  * **    **** **  ** * *****  ** *** *  **  *** *  is a prefix of %s",pre,a);
**   *      *  ** ******        * *** **  **   ****  *** ***   ********** *****   ** **   
 *  *** ****   *  *  *** *  *        *  **  * ****   *****  *  *** *  * ** * * ** *  **** *      * *  *  *   **** * *  is not a prefix of %s",pre,a);return 0;
***  *   ****   *** * ** 
***    **  * *  *  ** *  *         * ** *  * *      ** *  *** *** ** * ** *  *

      *    *  ***   ***  * * 0;
}
answered by (-32 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include  ** **  *  *
#include * ** *** **** ** 

int main()
{
   *  **    ** *       *  * ** a[100];

** ** *  *   **   * **  ***** b[100];

 *  ** ****        * *   **  **    *  ** * **    %s", a, b);

*  *  **      ***   *****  * * len_a = strlen(a);

  *    ** **  ****    * i = 0;

   * ** ** ** *** *  *   * *** flag = 1;

    **** ** * **** ****** ** ** * * = 0; i < len_a; i++)
*   ***   * ** ** **    *  
* ** ** *  ** ** * * ** ***  * * **  ** ***  *  **** *   != b[i])
*   ** * **   *** *      *  ** ** ***    ***   * ***  **
* * ***   *  *** *   *   *******  * *   * *** *  *  ***  *  **  *    **  * * **** = 0;
*  * * * * *** *    *   * ***  * * **** *   *  * * *
****    *   * * **       

 *** **       * **    ******** == 0)
*   ******** ** * ** **
*  ** *** *** *  * *  *   * * * ** ***   **** **  *    **  *     *** is not a prefix of %s", a, b);
* ****  *****    ***  ** *
**   **  * * *    ******  * *
 **   * * **   *** *   *   * *
  * ***   ** *   * * ******* * *     **** ***** *** **   **  ** *** ** is a prefix of %s", a, b);
*   *   *** *     *        
*  *   ** *** ******    *** *  0;
}
answered by (-285 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
  * ***   ** **  *** * 
int main()
{
*  *** **  ***  * ** *** **  * i,n;
** ***    *** ***    * ** *   **  p[100],s[100],a[100]={};
*  ***   *   ****     ** ** ***   *   * %s",p,s);
*** ****** *  * *  *   ** ****** ***** 
**  **  * *** *  **  * *   
   * ** ** ** * *            * *  *  *****    *    *
*** **       * *** **    ***    ** *  ****
* * *  ** **   **   *** ***      ** * ** * ** *  **      * * **      * is a prefix of %s",p,s);
* *** *   *  *    *** ***  * * 
**  ***** ****   *  * * *
 *  **  *  * ****   * ***  **    ** * * ** ********  *  *   * *  ** is not a prefix of %s",p,s);
   ** * * ***   ** *  *  *   * 
** **       *  ** ***     *   *  * *** * *  *  *   * *
    * ***** *    ** ****  *** * * 0;
}
answered by (54 points)
edited by
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
    int i;
    char a[100];
    char b[100];
** ******   ***  * *  * *    *      *  **  **   **    * 
    scanf("%s",b);
    for(i=0;i<strlen(a);i++)
* *    ****  *** *  *   * **  * ** ** *   *  ***     
  * ***** **     *****   * *** ****  ***  ***   *  *    * *** *  **  **  *  * ****** * **** *  * != b[i])
***   *  *  *    ** ** * ****   *** **  * *   *****  *  ****   * ** *  **** * * *   * *  * *   **** *** 
 ** *****     **   ***  **  ** **  **  *   ** *  *   **   *    *** **       ** * *    *  ** *   ** *****  ** *     **   *** **** *  *    **** is not a prefix of %s",a,b);
   ** ***  *  *   ***  *********  *  *  *  ******   * ****  ***** *  ** *   *   ** ***        * ** ** **     * *    ** ** *  **** ** 
** * * * * * * *  *   * ***** **** ***** ****   *    *   *      * ****    **  *  **       **   *  *   *** ** *   *
** ** * *   ***** * * **       *   ***  ** ** ** ** *   * * *       ** ** *  **** * ****  **** == b[strlen(a)-1])
*** *  **  * * * * * *       * ** ***  ***   * ** * ** * ** *  ** *** ** **         *  **  **** * *    
*    *****  ***  *    *** *   ***    *  * **  * **   * *** *  ***** *  *     ***** *  ****    **   ****   *  *  **** *     ** *** ** *** ** * *** * is a prefix of %s",a,b);
***   *      *** ** ** * * ***  * **  *        * *    **      *    * *   *  *** **     *** *****   *** ** *   ****   * * **   ***      ******   *****
   * * ** * **  *  * **  * ** * * ***** *      **** **  **** ***  ** *  * **** ***  ****   * **** **   *  *  
***** ***** * ***  *  * * *   * **     * * 
}
answered by (-301 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define n 100

int aa(char a[],char b[]){
  ***  ***  ******* *     *  *** i;
 ****** ***  **  ** **  ** * ** * (a[0]!=b[0]){
*** *  * *  *** **  **    * * ** *      *  *   *  ***      *   * 0;
   **   ** * **** **  ** * ** **** *** *
      * **  *     **  * * ** *   * * ** *      *** *** 
* *** *  *  *   ** ****     *   ******** ** *** ** *** ** * ******  * a[i]==b[i])
*** *******   * *    ****    ** *      *   ***** 
 **    * * *  ** ********  *    ** *       ****    *** ** ***   **   **  ** * **   * 1;
** * *  * *  * *  * * *   **   **  *    *** ***** *  *  **   **    *  **  * ** * 
    ** *  * *** *      **    **  *   *  * * * ***  
**   ***  *** **   * *  *  * ** * 
 *** *    * * * *   *      ** *** * ** 0;

}

int main(){
 *   *  ***  * ** **   ** *      * ** c[n],d[n],e[n];
**  * **   * ***   * * *    * i;
 *** * * * * * *   **  *  ** ***      %s",c,d);

 ***** ****   * ** *  *   * *  * *
* ***   *  ** *    **  * * *   * ***     *** ** ** ** *  ***  *  * * is a prefix of %s",c,d);

 *  * * *  *   * ** ** * *
*** ***   * *   ** *****  * ****      *  *   *  * ** ***  * * is not a prefix of %s",c,d);


}
answered by (-32 points)
edited by
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Wrong output
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.59.97
©2016-2025

Related questions

1 like 0 dislike
37 answers
Final Exam 5 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42302 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 11k views
2 like 0 dislike
31 answers
Final Exam 4 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42301 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 9.5k views
1 like 0 dislike
32 answers
Final Exam 3 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42300 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 11.1k views
2 like 0 dislike
30 answers
Final Exam 1 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42298 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 8.8k views
0 like 0 dislike
4 answers
[Makeup] Final Exam 2 (20%)
[Exam] asked Jan 19, 2018 in Final Exam
ID: 43460 - Available when: 2018-01-20 09:00 - Due to: Unlimited | 2.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users