Final Exam 2 (20%)

1 like 0 dislike
13.8k 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 | 13.8k 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:172.70.80.4
©2016-2026

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 | 13.1k 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 | 12k 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 | 14.6k 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 | 10.8k 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 | 2.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users