Final Exam 2 (20%)

1 like 0 dislike
10.2k 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 | 10.2k 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:172.69.17.186
©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 | 10.6k 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 | 9.2k 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 | 10.6k 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 | 8.3k 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 | 2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users