Final Exam 2 (20%)

1 like 0 dislike
17.4k 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 | 17.4k 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:162.159.115.9
©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 | 16k 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 | 15k 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 | 18.7k 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 | 13k 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 | 3.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users