Final Exam 2 (20%)

1 like 0 dislike
11.3k 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 | 11.3k 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:172.70.179.203
©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 | 11.3k 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 | 10.2k 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 | 11.7k 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 | 9.2k 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 | 2.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users