Final Exam 2 (20%)

1 like 0 dislike
10.7k 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 | 10.7k 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:172.69.214.205
©2016-2025

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 | 11k 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 | 9.5k 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 | 11.2k 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 | 8.8k 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 | 2.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users