Final Exam 2 (20%)

1 like 0 dislike
8.8k 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 | 8.8k 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:172.70.127.171
©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 | 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 | 7.9k 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 | 9.2k 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 | 7.1k 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 | 1.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users