Final Exam 2 (20%)

1 like 0 dislike
14.9k 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 | 14.9k 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:162.159.115.31
©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 | 13.7k 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 | 12.9k 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 | 16.2k 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 | 11.2k 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 | 2.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users