Final Exam 2 (20%)

1 like 0 dislike
11.9k 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 | 11.9k 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:172.70.100.71
©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 | 11.9k 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 | 10.8k 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 | 12.1k 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 | 9.6k 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 | 2.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users