Final Exam 2 (20%)

1 like 0 dislike
13.1k 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 | 13.1k 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:172.70.50.50
©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 | 12.6k 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 | 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 | 13.4k 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 | 10.3k 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