Final Exam 2 (20%)

1 like 0 dislike
12.1k 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 | 12.1k 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:172.70.50.26
©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 | 12.1k 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 | 11k 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 | 12.2k 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 | 9.7k 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 | 2.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users