Final Exam 2 (20%)

1 like 0 dislike
15.5k 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 | 15.5k 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:104.23.243.164
©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 | 14.1k 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 | 13.4k 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 | 16.6k 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 | 11.5k 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 | 3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users