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:172.70.126.212
©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