Final Exam 2 (20%)

1 like 0 dislike
8.3k 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 | 8.3k 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:172.71.254.80
©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 | 8.6k 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 | 7.5k 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 | 8.7k 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 | 6.7k 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