Final Exam 2 (20%)

1 like 0 dislike
13.1k 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 | 13.1k 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:172.69.130.92
©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 | 12.6k 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 | 11.6k 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 | 13.4k 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 | 10.3k 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 | 2.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users