Final Exam 2 (20%)

1 like 0 dislike
2.2k 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 | 2.2k 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:172.71.254.230
©2016-2024

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 | 1.8k 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 | 1.8k 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 | 2.1k 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 | 1.5k 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 | 459 views
12,783 questions
183,443 answers
172,219 comments
4,824 users