Final Exam 2 (20%)

1 like 0 dislike
8.6k 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 | 8.6k 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:172.71.254.91
©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 | 8.9k 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 | 7.8k 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 | 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 | 7.1k 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 | 1.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users