Final Exam 2 (20%)

1 like 0 dislike
16k 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 | 16k 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 | 14.4k 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 | 13.7k 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 | 17k 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 | 11.8k 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 | 3.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users