Final Exam 2 (20%)

1 like 0 dislike
12.9k 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 | 12.9k 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:172.69.17.66
©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 | 12.6k 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 | 11.5k 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 | 13.3k 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 | 10.3k 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 | 2.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users