Final Exam 2 (20%)

1 like 0 dislike
8.2k 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 | 8.2k 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:172.70.127.119
©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 | 8.6k 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 | 7.5k 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 | 8.6k 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 | 6.7k 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 | 1.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users