Final Exam 2 (20%)

1 like 0 dislike
13.3k 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 | 13.3k 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:172.70.50.63
©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 | 12.7k 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 | 11.7k 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 | 13.8k 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 | 10.4k 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 | 2.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users