Final Exam 2 (20%)

1 like 0 dislike
8.5k 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 | 8.5k 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:172.71.254.120
©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 | 8.8k 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 | 7.7k 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 | 8.9k 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 | 6.9k 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 | 1.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users