Final Exam 2 (20%)

1 like 0 dislike
2.5k 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 | 2.5k 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:172.69.59.85
©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 | 2.2k 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 | 2.1k 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 | 2.5k 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 | 1.8k 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 | 478 views
12,783 questions
183,443 answers
172,219 comments
4,824 users