Final Exam 2 (20%)

1 like 0 dislike
13.2k 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 | 13.2k 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:172.69.7.59
©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 | 12.7k 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 | 11.6k 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 | 13.6k 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 | 10.4k 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 | 2.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users