Final Exam 2 (20%)

1 like 0 dislike
2.5k 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 | 2.5k 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:172.69.59.37
©2016-2024

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 | 2.2k 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 | 2.1k 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 | 2.5k 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 | 1.8k 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 | 478 views
12,783 questions
183,443 answers
172,219 comments
4,824 users