Final Exam 2 (20%)

1 like 0 dislike
15.6k 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 | 15.6k 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:104.23.197.65
©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 | 14.2k 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 | 13.5k 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 | 16.7k 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 | 11.6k 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 | 3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users