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:172.70.50.50
©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 | 12.7k 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 | 11.7k 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 | 13.8k 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 | 2.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users