Final Exam 2 (20%)

1 like 0 dislike
16k 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 | 16k 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:104.23.197.64
©2016-2026

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 | 14.6k 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 | 14k 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 | 17.1k 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 | 12k 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 | 3.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users