Final Exam 2 (20%)

1 like 0 dislike
17.3k 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 | 17.3k 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:162.159.115.10
©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 | 16k 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 | 15k 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 | 18.7k 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 | 13k 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 | 3.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users