Final Exam 2 (20%)

1 like 0 dislike
8.3k 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 | 8.3k 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:172.70.127.154
©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 | 8.6k 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 | 7.5k 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 | 8.7k 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 | 6.7k 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