Final Exam 2 (20%)

1 like 0 dislike
13.1k 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 | 13.1k 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:172.70.126.216
©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 | 12.6k 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 | 11.6k 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 | 13.5k 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 | 10.4k 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 | 2.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users