Final Exam 2 (20%)

1 like 0 dislike
9.1k 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 | 9.1k 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:172.69.58.198
©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 | 9.4k 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 | 8.2k 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 | 9.5k 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 | 7.4k 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 | 1.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users