Final Exam 2 (20%)

1 like 0 dislike
15.4k 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 | 15.4k views

37 Answers

0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <string.h>


int isprefix(char prefix[], char txt[]){
 *  **** **  * * *   *  ** ** ** i,flag=1;
*  **  ****    *** *    *  ** * *  * ***  *  * **  *** * *** *  
     *** *   *  ***   **   * *   *** ** ** *  * *      * * *** *** 
* *    *  *  *   *  **  

*    ** ** **  **  *   * ***  ** * flag;
}


char prefix[100],txt[100],i;

int main(){
*      ** *   * **        * *  * *****  ** * 
    ** * **  *   ****    ***** ****    ***

* ** *   ***      *****     ** ** **  ** * 
*  * *  *     * * * * **** * * ** * * *   ****** **  * ***   * * ****     *   * **  ** **** 
*** * *   *** ** ** ** * **    * * * ***  *     ** * * * *    **  is a prefix of ",prefix, txt);
* ** * **   *****  ***      * *  * ** **  **   *   ***    ** **      ** ***   *** ** **  *  *
  * * *** **   ** *** **  * *
* ** * *    ***  *   *   *     {
 * * ***    * ***    *  *** *    ***   *  * *     ***  * *       *   * *  * *  * *  *        ***   * *  ***  
*  ** * *  *     * **     ** ** ********    ** *       * **    is not a prefix of ",prefix, txt);
** ***** * ***    *   *** ***   *    **   *     *  ** ***   * ***  *   *   ***** * * ** * *   *  * * *  *   
* * **   *** **** *** ***  ***   
* * *** * * **  ** ******   * * 0;
}
answered by (-286 points)
0 0
prog.c: In function 'main':
prog.c:24:16: warning: too many arguments for format [-Wformat-extra-args]
         printf(" is a prefix of ",prefix, txt);
                ^~~~~~~~~~~~~~~~~~
prog.c:29:16: warning: too many arguments for format [-Wformat-extra-args]
         printf(" is not a prefix of ",prefix, txt);
                ^~~~~~~~~~~~~~~~~~~~~~
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
* * *      **   *   *
*** *  ** **   **** **   
char prefix(char string1[],char string2[] )
{
* * *  ** ** **   * * *** i,a;
* ***  **  * *   *******   *   *
*******     *  *  ** *   **   ****    ****
  ** ***** *  *

*    * *      ** ***  ***    **   *      * * *
  {
  * ** ******* * * *  ***  * * *  *     * *  *******  *  
 ****  ** ***  ****  *** ****  *    **  ****** ** *    ***  *  *
* *   **     *** *
** *   **   * *  *** ***    **   * 
*****  * ***     ** *    * **  is a prefix of %s", string1,string2);}
   ******   * * **    ***     **    * * ** is not a prefix of %s", string1,string2);}
      * **  ** *
**  ***** *** 
 * *     * ***  
********    *****  *  *  *   *** * * **   **** *  *  **   **   * ***  
   ** *     *  
**   ** ***** *** ** *  * * * *  **  ***  **  * ***  * ** *
* ***  *  ***          ***  *** ** * *  **
 * **  **  ** **   ***** *  ** *  ****** *** *       **  ** **     ** *  *  *  
**** ** **  **    *** * *   * ***       **
***  *  * **  *
**  *    **  **  * ** **** *** * *
 ***** **  * * * ***   *** ** is a prefix of %s", string2,string1);}
 * * *   *  * * * *  ** *     ** **** * *  is not a prefix of %s", string2,string1);}
  ** * ** *     *

}
int main(void)
{
*  *        *** chaine1[1001], chaine2[1001];
 * ** *  *   ** **  *    *****  ** **
*  *   *  * **  * ** **  * ***  * *  * ***  **
** *  ** **   * *          ***
* * *   *  * **  *  0;
}
answered by (-168 points)
0 0
prog.c: In function 'main':
prog.c:37:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1001]' [-Wformat=]
   scanf("%s\n",&chaine1);
           ^
prog.c:38:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1001]' [-Wformat=]
   scanf("%s",&chaine2);
           ^
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 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)
{
*   * *  * ***   **** *    str1[100],str2[100],i;
 * *      ** *     *** *    *    ***   *    * * ***** *
 * * * * *    *  ** *   * ***  * * * * * ** 
  *   *** ** ** **   *  * * 
* *  *  *  * * * ** *  **  *   *** *** **** * **  *  **   ** 
 ***   * **** **  * * * *  * *     *** * ***  ***   * ** **      * * **  * * * *  * ****   is not a prefix of %s",str1,str2);
* **  * * *  *** ***  ** **  *  **  * *** *      * ** *** * ** **   **  * *    ** 0;
*    ** * * * *  ***    ** *     ** **  *** * * **   *  **  *   * ** * *** * *  ** *  ***
*** * ******* **    *** ** *

 printf("%s is a prefix of %s",str1,str2);
  **   *   * *****  *  ***    0;
}
answered by (-304 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 'int *' [-Wformat=]
     scanf("%s%s",str1,str2);
             ^
prog.c:6:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
     scanf("%s%s",str1,str2);
               ^
prog.c:7:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str1);i++)
               ^~~~~~
prog.c:7:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:7:22: warning: passing argument 1 of 'strlen' from incompatible pointer type [-Wincompatible-pointer-types]
     for(i=0;i<strlen(str1);i++)
                      ^~~~
prog.c:7:22: note: expected 'const char *' but argument is of type 'int *'
prog.c:10:23: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
             {printf("%s is not a prefix of %s",str1,str2);
                       ^
prog.c:10:45: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
             {printf("%s is not a prefix of %s",str1,str2);
                                             ^
prog.c:15:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
  printf("%s is a prefix of %s",str1,str2);
           ^
prog.c:15:29: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
  printf("%s is a prefix of %s",str1,str2);
                             ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:8:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str1);i++)
               ^~~~~~
prog.c:8:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:8:15: note: include '<string.h>' or provide a declaration of 'strlen'
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()
{
 **  *** ******** **    str1[100],str2[100];
    *  * **  * ******* *  i,c=0;
* *  ***  ** *  ******* * *      * **** **  ****    
   *  ***               *  * * *  *  * *  **    *  
** * **    * ****  *** * *  ** ******* **   ** 
    ** * *  * *** * *  * **    
** *    * * * **    ** *    * *   * ** *    *   ** ** **  * * **  
  *   *  ** * * ** *****  *** ****    * *****      ***     * 
** *  ***  *  * *   * ** *   * ***   ** * ***     * ***** ***** *  * * * * **   ****** *  
* * * *  *** * ** ***   **  ** *  * *** * * * ** * *    * * 
    }
  *    *** *  *** *  ******      *   * 
* ** * ***  * **   * *  
 * *******   **** * ** * ***     * *   **  * **  * ** *    **   *   is a prefix of %s",str1,str2);
  ** * * * ****** * *** 
   * **  **  ** * * ****  **
**   **   **   **  ****** 
 * *** * **   *  ** *** **   ****  ** *       ****   *  *   * ****** is not a prefix of %s",str1,str2);
*****   *  ** * ****** * * *
}
answered by (-140 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(void)
 {
  ** ***  * *********** * *   ** * * *   pre[100],str[100];
  *  * *  **    *   ***** * ***     i;
   **  ***  *** *  * *  * * *   *  **  **** *** ***  * *** 
 ****  * *    *********   *  * *  * **  * *  *  **** 
*   * * *   *  ***     *     ****** *** * * **  ** ** ** 
    {
 *****   ***     *****    * ****   **  *   ****   ** ****** ***** * * ****   
*    **  **  * * ***** * * * ***    **     **** * * ***   ** ** *     **   *
*** ** *****  * **** **     **  ***   **   *** * * *****      **  *  *****  ****** ** * **  *** **    * *  ** * *** is a prefix of %s",pre,str);
 *  ***** * **  *   *  ***   *** ** **   *  * * *  **  *  *  * **    ******** *****  * **  ****  *  ****  * **** **
  *** ** *    * *  * ** *  ** ***       * **** * * ** * *  *** *** ***
   ** *** *  **  **    *** * **** **    ** * * *** *****  

* *   * ** * * *****      ****   **  * * * *         ***  * *  * *** * **  *  
* *   * * *  * **   *   **  * **    * *****   ** * *  *  *  ** *  **** *  ****  *  * *  ****  ** *  * *    ***  *    is not a prefix of %s",pre,str);
***     *  ****   **      ** **      *** * * ****  *     **    * **** * *** *   *** ** *  * **  * ***  ** *  **  ***
*    *  **  *   *  *  *  ***   *  *   **   ****  *** * ****** **   *  * **       * *
    }
    return 0;
 }
answered by (-281 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()
{
  ** ***    *   * *    *****  str1[100],str2[100];
  *     **** **    ****  **  i,c=0;
* *** ** ****    ***      ** **  ** * *     * **** * 
 ****** *    *   * *   *** ****  *   ** *  * *  * *    
 ***   *  ***  *  *** ******     ** * ***** *  
   **  *  **    *   ** *  
      * * ** ****  ***    *** *   *  **  ****  * **** *    *** **
  **  ** ** * *** *  *   ** **  *    ** ** * *       ** * ***
 ******  * * * **** ** **  *   * *   ******   * *    * **** ****** ***   **  **** * **    *
  ***  ** ** * **** * ** ***    ***  ***** **     
    }
*      * * ****  *  **** ** * ** *  
** *   * ** *    * * *      ***
**** * *   ***  *** *   *  * *    **    *  *  * *  *** ** *  * ** is a prefix of %s",str1,str2);
  *  *  **  *   *** *    *  **
* ****      *  ** ** * * *
  *** *   *** * ** * *** * 
 **** *  **   *  ****  *  * * **   * ** *  *  **** * ****  * *  *  is not a prefix of %s",str1,str2);
 **   *   * ** ***  *** ***   
}
answered by (-323 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 * ****        *
#include  *  ***  *  ***  
#include **  **      

int main()
{
***   * *  *    **** * ****  prefix[100];
*   ** ** **** *  *  **   *  ** word[100];
*  *** ** ***  ***  *    *  * * **** *    %s", prefix, word);
**  ** **   *  **      *   ** ** i;
* * * * **  **  * * *  * *** *    = 0; i< strlen(prefix); ++i)
****   ** ** ***    *** 
*   ** * *  * **   *     ** *  *   **  *  *   ** **   * *** *     * 
   ***    *** **** * ****  **  ** ***    * *   * *  ** *  *   
 **** **** *  ***   **    ***    **   *****  *  * * ***** * ** *   **     ** *** * ***  *  *** ** is not a prefix of %s", prefix, word);
 ** * *   ***  **     * * * * *********** *  ***   *       * ** *** * ** ** * ** *  0;
   ** ***      * *  **  *******   *** *  **** *  *
* * ***   * **  **  *    **
* ** *      * * *     *   *  * **  **   is a prefix of %s", prefix, word);
** ** *   *** *     *****  * ** * 0;
}
answered by (-254 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;
  * ********  * * *  ** ** a[100],b[100]={0},c[100]={0};
 *   * * **  *  ** *    **** * *  %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 (-229 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()
{
***  * *   **   **    String[50],string[50];
 *****     ***  ***  **    *** a,b=0;
 **       ****  ** * **    * *     *   ***   * **   *
     ** ** * ***  **   *** *     *  * *  ***   ** * 

 **   **** * *  **  *     *  **   * 
    ** *  *** *  *     * *  **
**  *   **  *** *** **  * * ** **   *         **** *  ** ** *** *    * *  * *  *
*** ***   * ******    ** **  * * ***    ***    ** **** * *  
*      * *  * ** *  * ** ** * * *  * *   *  *   *   **   *  *     **    *    * ***    *
**   * *  ******** *   *** *** **  ***    *  *    **  
    }
* ** ****** * **  * ***** ********
**** ******    *     * * ***  
* **** **   **** ***  * ** * **    * ** ******** ** *   ***  * is a prefix of %s",String,string);
***** **    *****  * * ***
** ** *   *  *  ****  * * *
  **  **   *  *  ** ****  * *
  **** *****  * *  ** * ******* *     *    * *   * * * *** * *  ** is not a prefix of %s",String,string);
*      *  *** *  ** * ***  
  return 0;
}
answered by (-107 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: Correct output
Case 1: Correct 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 *  ** *  * ** **  *
#include  *** *  *  **  * 

int main()
{
* **  *    *    *     * ** *** * a[100],b[100];
* * **  * *  *******  *** * **  *  * %s",a,b);
*      **** * ** *  ****  *  i,j,prefix = 1,len = strlen(a);
****  *** ** *     * ** * ****  = 0 ; i < len ; i++)
* * *       ** * * *  *  **** 
*       * **  *   ***  ***     *   * *         *   *** **   *     != b[i])
* ****  *** *  * **         *******  **  **** *   **   
 *  ****  * **** ** * **  * * *  ** * * *****   *  *** ***    * **  * ** ***  *  *** **** = 0;
*****   *    * *  *****  *  ** *    *  ** *  *  **  * *    ** *  ***  * ****  * *   ** ***  **  * is not a prefix of %s",a,b);
** **** *** ***       *******   **  *  *  *    *  *   * ****  **  *  *  ***  ***  *****
 **    *    *  **      *  * ****** *  ***  ******

  *      * ***** *** * **
   * *****       **   *** *   ** ** == 1)
 *  *    ******** * * *  ****** * **** **  ****** **  **  * ** *  ***   is a prefix of %s",a,b);


*   ****** *** ** **   **    **** 0;
}
answered by (-255 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)
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 | 13.3k 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 | 2.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users