Final Exam 2 (20%)

1 like 0 dislike
16.6k 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 | 16.6k 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 | 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 | 17.8k 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 | 12.4k 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