Final Exam 2 (20%)

Question

16.6k 瀏覽

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

[考試] 最新提問 1月 16, 2018 分類:Final Exam |
ID: 42299 - 從幾時開始: 2018-01-17 14:00 - 到幾時結束: 無限制
標籤修改 1月 16, 2018 用戶:thopd | 16.6k 瀏覽

37 個回答

頁:

coach · Answer 1 · 2018-01-18 18:38:34

內容已隱藏
 * **   **   ** *   *  *
*  *   * ** **** * **

int main()
{
* * * *** **** *  char *     *  **
  ** *      *   int i,c=0;
  * * * *    ****  * **      ** * ***   **  ** ** *
* *** *     **      ** *  *     **     ***  *  
* *    ***  *   *   **    * *  *  *
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*       ** *** * ** **   *  *  * *   ****   ** ** *******  {
  * *                ***  * *  *   * c=0;
* *** *  * **** *  *  *   ** **  * **  *     * * * **  *** * *** **  }
  * * *    *    * ***  *  * *** *   * *   **  else ** ** ***** **  * ** *  * ***
**   * *  **** *** *    * ** *     * *  **   * ***      **  *  {
*  *  *   *     * * *  **   *  **     *  *  ******   ** *     ***  c++;
****  *   * *** **** ** *     *  * *  ** *  * * *       ***  }
  *    *          * *** **** **   }
  *** ***  *** 
 ****  *  **** if(c==0)
 ****  **      *     **  *     ** *  *   **  *  is not a prefix of *   ***    *
* ****  * * *  else
 *****    *  ** ** *  ****  *   * * ****     is a prefix of * ***  ****
*  *  * *    }
 **  *  * *****   return 0;
}

最新回答 1月 18, 2018 用戶: coach (-258 分)
修改於 1月 18, 2018 用戶:coach

112233 · Answer 2 · 2018-01-17 17:52:12

prog.c: In function 'main':
prog.c:6:10: error: 'a' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
          ^
prog.c:6:10: note: each undeclared identifier is reported only once for each function it appears in
prog.c:6:17: error: 'z' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
                 ^
prog.c:10:12: warning: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^
prog.c:10:12: error: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:11:12: error: expected expression before 'return'
            return 0;
            ^~~~~~
prog.c:12:12: error: expected ';' before '}' token
            }
            ^
prog.c:12:12: error: expected declaration or statement at end of input

發表於 1月 17, 2018 用戶: The Judge (4.3k 分)

prog.c: In function 'main':
prog.c:6:10: error: 'a' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
          ^
prog.c:6:10: note: each undeclared identifier is reported only once for each function it appears in
prog.c:6:17: error: 'z' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
                 ^
prog.c:10:12: warning: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^
prog.c:10:12: error: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:11:12: error: expected expression before 'return'
            return 0;
            ^~~~~~
prog.c:12:12: error: expected ';' before '}' token
            }
            ^
prog.c:12:12: error: expected declaration or statement at end of input

發表於 1月 17, 2018 用戶: The Judge (4.3k 分)

prog.c: In function 'main':
prog.c:6:10: error: 'a' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
          ^
prog.c:6:10: note: each undeclared identifier is reported only once for each function it appears in
prog.c:6:17: error: 'z' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
                 ^
prog.c:10:12: warning: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^
prog.c:10:12: error: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:11:12: error: expected expression before 'return'
            return 0;
            ^~~~~~
prog.c:12:12: error: expected ';' before '}' token
            }
            ^
prog.c:12:12: error: expected declaration or statement at end of input

發表於 1月 17, 2018 用戶: The Judge (4.3k 分)

prog.c: In function 'main':
prog.c:6:10: error: 'a' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
          ^
prog.c:6:10: note: each undeclared identifier is reported only once for each function it appears in
prog.c:6:17: error: 'z' undeclared (first use in this function)
   if(ap>=a&&ap<=z || ap=a)
                 ^
prog.c:10:12: warning: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^
prog.c:10:12: error: missing terminating " character
     printf("bc is not a prefix of abcde);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:11:12: error: expected expression before 'return'
            return 0;
            ^~~~~~
prog.c:12:12: error: expected ';' before '}' token
            }
            ^
prog.c:12:12: error: expected declaration or statement at end of input

發表於 1月 17, 2018 用戶: The Judge (4.3k 分)

hubertyeh · Answer 3 · 2018-01-17 17:38:48

內容已隱藏
 *  ** *******  * 
 *    *    **

char p[1000],s[1000];
int i,pl,sl;

int test(char p[],char s[],int pl, int sl)
{
*** *** **    ****       * ***   *    ** i<pl; i++)
* ***  *** * *** ***  **
   **   ******  *  **** ***   **    * * ** ** * * *** (p[i]==s[i])
 ** * **  **** * * **  ***  * **     *     *     * * *   *
***   *   * *  * **   * ***  *    *****       *    **   ****    ** ***   *    ** **** * **  
** *  * *  * ***  * * ** **  * *  * *** *  ** *  * * *** ****  ***    *   *  *** **
 *  **   *   * *       ****  **  * * **    ***   *** *  *** * *** * *     ** * ****   **  ** ***  ***** * **  1;
   * ** ***    *      *   ***  * ***  *** *  **    ******  *  ** * *  *  ****
 **  **   ** *       * ** *    ** *  * *   *  *** * **
     *  * *  *  ** ** * *** ** *  ** *  * *     * **** if(p[i]!=s[i])
******     ****  * **  *******  *  *******  ** **  *  * *
      * *  *      * ***     ** * *  ** **    *  **** *** ****   *    ***   *     *   0;
 *   **        * * * * ***  *** * * *** ** **  *
*  *   *  ** *** **   **   *  ** *
}


int main()
{
   *     * *   * 
 **** *      
* **   *** *   * ",p);
***     *   *         
    ****  *      * **** 

sl=strlen(s);
pl=strlen(p);


*    *  * * *** && pl<sl)
{

 **   * *** * * *   *    **     * **  ***  * is a prefix of %s",p,s);
}else
{
printf("%s is not a prefix of %s",p,s);
}





}

最新回答 1月 17, 2018 用戶: hubertyeh (-336 分)

rick · Answer 4 · 2018-01-17 16:29:44

內容已隱藏
#include<stdio.h>
#include<string.h>
int main()
{
 *   *  *  ***  * *    ***  *  a[99],b[99];
    int l,i;
*** ** ** **   * *   ** **  ** *  * *  
   *** **  * **** ***       ****     *  * 
**   ***  *    **** *  ****   * 
* *** *      * ****** ** *   * ***** ** *** 
    {
  *   **     ****  ******  * * *** * **  ** * *   ** **** *** 
** ***  **     ***   *  * *     *** *  ** *  ** * *    
    ***         **  * *** * ***   ****  *  *    ** *  * *    ** **** **     * ** *  ** *  *** a prefix of %s",a,b);
*    ***** ** * *     ** * *  **     **** * **     *****  * ***   **  * ** * *   **
** *  *  * **   **** *   * * **** * **** * * * ** 
*  * **  ** ** * **** * ** *  ** * *** ******   * **** *
*      * * **   *   *** *  **   ****  ***  * * * * **
*               ** * * * **  *** * ***  ***  ** *    *   * * ** ***   **  *  ** *  **      ** not a prefix of %s",a,b);
   *   **   ** *  **  *    ***  *  *  ** ** * *** *****   **   * * ***   *   * *****
 ********  * *** ****** * ** ** *   ****     * 
    }


}

最新回答 1月 17, 2018 用戶: rick (-255 分)
修改於 1月 17, 2018 用戶:rick

Diyiel · Answer 5 · 2018-01-17 16:27:31

內容已隱藏
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

int prefix(char a[100],char b[100]);


int prefix(char a[100],char b[100])
{
  **  *** *  **  ****  *** i;
* * * *   **   **    *  ** *   * count=0;
    **            ***    * * * len;

*****   **** ***    ** * ** *  ** *****

**  ************  * * *** *   *   * **** **  *
*   * ***  ** *   **** *
    *** * *** * **  **  ***    ****  * **** * * **    **
 * *    * **     *** ****  ***** *****  *    * ***  * 
*   * **   ************   ** * ** * *** *****  * *** *  **   *    *  *  *******  ***   
* ** **       *  *** ********  **   *  * * **  *    *** 
 * *  * *   * ** * ** * 


*   *   * *****  ** *  *  * * **    *  
******  *    *** ** **   *
  ****** * * ** **  **   **** ** * *   ***   ** ** ** 1;
***        * * *     *
***   ** *  *  *  * ***    ***

   return 0;
}


int main()
{
   * * **    *  ***  *      * a[100];
 **** **     ******* * * **   b[100];


**  *** * **** ** * * **  *  *   * * *  *  *****  ******
***    *** * * **   * * *  **  ******** *  **        **   

*  ** *** ** *  * ***  * *******     **   ****
** * **** * *** *  ** * * ******** * *

******** * * **  *  ** ***  ******* **

 {
     ** * * *   **  **  *   * ** **   **** * * *     ***    ** is a prefix of %s",a,b);
 **** * ***      *** *   
 *  **   ** * *  * ****      
*****    ***  *** *  *  *  *
   ****  * * * **  * *  *  ** ** * * *  **    * *   * ** *  *  ** ***** * * is not a prefix of %s",a,b);
* *   ****  ** *  **  *  *


*  *   * ** * * ** **  **** * 0;
}

最新回答 1月 17, 2018 用戶: Diyiel (-193 分)
修改於 1月 17, 2018 用戶:Diyiel

410421322 · Answer 6 · 2018-01-17 16:12:58

內容已隱藏
#include ** **     *  * *   
#include ******    * * 
#include   *****  * **** 

int pref(char[],char[]);

int main(){

   ** ****   * *  ****   ****   p[10],s[10];
   *  *  ** * ** ** * * **** num;

  ** * *  *  * *   **** *** ** *******
** ** *    *    ****** * * **    * 
  * ** **      * *  *    * ******  *** ******* * *
 ***** *** **  *  ***   **** *  * **  * * *   * * *    *

  *  **   ** ** *    *  *  * = pref(p,s);

*    ** *******   * ******  * 
***  *  **** ** **** ** * *  **** ***   ** *** * * * **    *   * *   is a prefix of %s",p,s);
** * ** * * ** * *  *****  ***
 ***** ****  *  * *    **   * * **  **  *  *   ****** * * ** ****  * ** is not a prefix of %s",p,s);


 return 0;
}

int pref(char p[30],char s[30]){
** ** ******** *  * *   **       i;

  * * ** ** * * **  * ***** * * ***** *** * **
* *    **** * *    * **  *****  *       *****     * ****   **  *** **  **** * ** ***    ***** **    ****   
 * **    * ******** ******* *  ** **      * *** *  *** *   * *** ***  *     *   *** *** ****** *  **     ****    is a prefix of %s",p,s);
  *   * * * *   *******   **   **   **  *   *  * *****
  ******    * *  * *  *  ** *** **** ** *   **     ****** * *    *****   *** *   **  ** * *** *  * is not a prefix of %s",p,s);

* *  *     *   *********

}

最新回答 1月 17, 2018 用戶: 410421322 (-74 分)
修改於 1月 17, 2018 用戶:410421322

prog.c: In function 'main':
prog.c:12:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(p);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:13:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/cc0tBG5r.o: In function `main':
prog.c:(.text+0x1f): warning: the `gets' function is dangerous and should not be used.

發表於 1月 17, 2018 用戶: The Judge (4.3k 分)

prog.c: In function 'main':
prog.c:10:13: error: stray '#' in program
     int num;#include <stdio.h>
             ^
prog.c:10:14: error: 'include' undeclared (first use in this function)
     int num;#include <stdio.h>
              ^~~~~~~
prog.c:10:14: note: each undeclared identifier is reported only once for each function it appears in
prog.c:10:23: error: 'stdio' undeclared (first use in this function)
     int num;#include <stdio.h>
                       ^~~~~
prog.c:14:1: error: expected expression before 'int'
int pref(char[],char[]);
^~~
prog.c: In function 'main':
prog.c:23:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10]' [-Wformat=]
     scanf("%s",&p);
             ^
prog.c:24:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10]' [-Wformat=]
     scanf("%s",&s);
             ^
prog.c: In function 'main':
prog.c:51:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(p);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:52:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~

發表於 1月 17, 2018 用戶: The Judge (4.3k 分)

潘恆安 · Answer 7 · 2018-01-17 15:50:02

prog.c: In function 'main':
prog.c:11:10: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
  scanf("%s",&a);
          ^
prog.c:12:10: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
  scanf("%s",&b);
          ^
prog.c:24:11: warning: format '%s' expects a matching 'char *' argument [-Wformat=]
  printf("%s is not a prefix of %s,a,b");
           ^
prog.c:24:33: warning: format '%s' expects a matching 'char *' argument [-Wformat=]
  printf("%s is not a prefix of %s,a,b");
                                 ^

410421323 · Answer 8 · 2018-01-17 15:35:28

prog.c: In function 'main':
prog.c:12:7: error: expected '(' before '{' token
     if{}
       ^
prog.c:13:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("abc", &p);
            ^~~~~
prog.c:14:13: warning: format '%d' expects a matching 'int *' argument [-Wformat=]
     scanf("%d");
             ^

810532009 · Answer 9 · 2018-01-17 15:21:35

prog.c: In function 'main':
prog.c:7:9: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
scanf("%s",&string1);
^
prog.c:9:9: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
scanf("%s",&string2);
^

Final Exam 2 (20%)

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