Final Exam 2 (20%)

1 like 0 dislike
15.5k 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 | 15.5k 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:104.23.197.95
©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 | 14.1k 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 | 13.4k 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 | 16.6k 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 | 11.5k 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 | 3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users