Final Exam 2 (20%)

1 like 0 dislike
2.6k 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 | 2.6k 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:172.71.254.121
©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 | 2.2k 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 | 2.6k 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 | 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