Final Exam 2 (20%)

1 like 0 dislike
7.2k 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 | 7.2k 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:172.71.255.85
©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 | 7.6k 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 | 6.5k 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 | 7.5k 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 | 5.8k 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 | 1.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users