Final Exam 2 (20%)

1 like 0 dislike
8.1k 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 | 8.1k 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:172.69.6.53
©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 | 8.5k 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 | 7.3k 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 | 8.5k 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 | 6.6k 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