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:172.69.17.199
©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 | 7.5k 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 | 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