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:172.69.17.67
©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 | 11.1k 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