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:172.70.130.25
©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 | 8.4k 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 | 6.5k 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