Final Exam 2 (20%)

1 like 0 dislike
9.7k 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 | 9.7k 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:108.162.242.71
©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 | 10k 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 | 8.7k 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 | 10.1k 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 | 7.9k 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 | 1.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users