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:172.70.127.121
©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