Final Exam 2 (20%)

1 like 0 dislike
12.3k 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 | 12.3k 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:172.70.80.121
©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 | 12.2k 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 | 11.1k 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 | 12.6k 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 | 9.9k 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 | 2.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users