Final Exam 2 (20%)

1 like 0 dislike
16.7k 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 | 16.7k 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:104.23.243.108
©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 | 15.1k 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 | 14.3k 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 | 17.9k 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 | 12.5k 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 | 3.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users