Final Exam 2 (20%)

1 like 0 dislike
9.7k 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 | 9.7k 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:172.69.214.51
©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 | 10k 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 | 8.7k 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 | 10.1k 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 | 7.9k 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 | 1.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users