Final Exam 2 (20%)

1 like 0 dislike
6.7k 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 | 6.7k 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:172.69.17.187
©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 | 7k 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 | 6.1k 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 | 6.9k 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 | 5.2k 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 | 1.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users