Final Exam 2 (20%)

1 like 0 dislike
6.7k 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 | 6.7k 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:172.70.126.212
©2016-2025

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 | 7k 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 | 6.1k 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 | 6.9k 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 | 5.2k 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 | 1.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users