Final Exam 2 (20%)

1 like 0 dislike
8.1k 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 | 8.1k 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:172.70.127.134
©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 | 8.5k 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 | 7.3k 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 | 8.4k 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 | 6.6k 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 | 1.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users