Final Exam 2 (20%)

1 like 0 dislike
15.4k 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 | 15.4k 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:104.23.197.95
©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 | 14.1k 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 | 13.4k 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 | 16.6k 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 | 11.5k 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 | 2.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users