Final Exam 2 (20%)

1 like 0 dislike
16.6k 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 | 16.6k 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:104.23.197.94
©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 | 15.1k 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 | 14.3k 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 | 17.9k 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 | 12.5k 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 | 3.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users