Final Exam 2 (20%)

1 like 0 dislike
4.9k 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 | 4.9k 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:172.70.131.217
©2016-2024

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 | 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 | 4.5k 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 | 4.8k 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 | 3.7k 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 | 943 views
12,783 questions
183,443 answers
172,219 comments
4,824 users