Final Exam 2 (20%)

1 like 0 dislike
16.7k 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 | 16.7k 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:162.159.115.9
©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 | 15.3k 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 | 14.4k 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 | 18k 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 | 12.5k 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 | 3.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users