1 thích 0 k thích
2.2k đã xem

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] đã hỏi trong Final Exam
ID: 42299 - Xem được từ: 2018-01-17 14:00 - Hiệu lực đến: Không giới hạn

chọn từ khóa lại bởi | 2.2k đã xem

37 Trả lời

0 thích 0 k thích
Hidden content!
**** *** *** *
**** * ** * **

int main()
{
** * **** char ** * ** *
* * * *** int i,c=0;
* ** * *** **   * ** *** * * *
* ** **   ** * ** ** *** * *
**** ** ** * * *** * **** *
* * ** * {
*** * * ** ** ** **** *
* ** * * **** {
*** * * ** * * * ** ** ** * * * * * * * ** * * * * *****
** * * * ** ** **** * * ** ****** {
*               * * ***** c=0;
* * * *** * * * * ** * * ** * * ** ** * * **** }
*** * * * * *** ** ** **** *** **** ** * * * else * * * *** *** * * ** *
**** *** * * * * ***** * *** * * ** * * {
** ** * *** ** * *** * * * * * * * * ** ** * * * * c++;
* * ** * ** ** * * ** ***** *** ** ** ** * }
*** ** * * ********* * * }
* * * * ** **
* * * * *** if(c==0)
* * * * ** * **** * ** *** * is not a prefix of * * * **
* * *** ** else
* *** * * ** * * * * * ** * is a prefix of *** * * **
* * *** **** }
**** ** ** ***** return 0;
}
trả lời bởi (-258 điểm)
đã sửa bởi
0 0
prog.c: In function 'main':
prog.c:8:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10]' [-Wformat=]
   scanf("%s",&a);
           ^
prog.c:9:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10]' [-Wformat=]
   scanf("%s",&b);
           ^
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
prog.c: In function 'main':
prog.c:10:6: warning: implicit declaration of function 'stlen' [-Wimplicit-function-declaration]
   if(stlen(b)>strlen(a))
      ^~~~~
/tmp/ccnE3ufV.o: In function `main':
prog.c:(.text+0x5b): undefined reference to `stlen'
collect2: error: ld returned 1 exit status
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Wrong output
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 thích 0 k thích
Hidden content!
* * * ** ** * *
*** * ** * *** *** *
int main()
{
** ** **** *** * ap;
** ** ** *** * * ***** * * **** * || ap=a)
*** ** * *** * * * * *** * * *** * is a prefix of abcde\n");
** * * * * **
*** ***
*** ** **** *** ** ** * *** ** ** is not a prefix of abcde");
** * ** * ********* * ** * *** *** * ** ** ** ** ** *** ***** *** 0;
* ** * *** * * * *** ** * * ** ** * ** * * ** * * *
  
trả lời bởi (-167 điểm)
0 0
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
0 0
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
0 0
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
0 0
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
0 0
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:12:12: error: expected declaration or statement at end of input
            }
            ^
0 0
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:12:12: error: expected declaration or statement at end of input
            }
            ^
0 0
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:12:12: error: expected declaration or statement at end of input
            }
            ^
0 thích 0 k thích
Hidden content!
** *** * * * ** * *
* ** ** * * *** **

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);
}





}
trả lời bởi (-336 điểm)
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 thích 0 k thích
Hidden content!
#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);
**** ** * ** * * * * * * * * ** ** * * * ** ** *** ** *
*** * *** ** *** * * ******** * ** * ***** ** **
    }


}
trả lời bởi (-255 điểm)
đã sửa bởi
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 thích 0 k thích
Hidden content!
#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;
}
trả lời bởi (-193 điểm)
đã sửa bởi
0 0
prog.c: In function 'main':
prog.c:45:15: warning: format '%[^
   ' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%[^\n]*c%",&a);
               ^
prog.c:45:20: warning: spurious trailing '%' in format [-Wformat=]
     scanf("%[^\n]*c%",&a);
                    ^
prog.c:46:15: warning: format '%[^
   ' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%[^\n]*c%",&b);
               ^
prog.c:46:20: warning: spurious trailing '%' in format [-Wformat=]
     scanf("%[^\n]*c%",&b);
                    ^
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 thích 0 k thích
Hidden content!
** * ***** ** **
* *** * * * * *

int **
{
**** *** * ** * * ** **** ******* * no idea, I ** * even do it in the * ***** * ****
* * * * * ***** ** 0;
}
trả lời bởi (-168 điểm)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 thích 0 k thích
Hidden content!
#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);

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

}
trả lời bởi (-74 điểm)
đã sửa bởi
0 0
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.
0 0
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__;
              ^~~~
0 0
prog.c: In function 'main':
prog.c:14:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10]' [-Wformat=]
     scanf("%s",&p);
             ^
prog.c:15:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10]' [-Wformat=]
     scanf("%s",&s);
             ^
0 thích 0 k thích
Hidden content!
* * *** **** ** *
** *** * * *** **

int main()
{
***** **** length1, * c;
*** * * * * a[100];
** ** b[100];
*** * ** d[100];

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

**** ******

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

* *** ** ****
*
** ** * ***** *** ** is a prefix of * ** *
*** *
** ** ** *
** *
* * ** ***** * is not a prefix of * * *
**

}
trả lời bởi (-66 điểm)
0 0
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");
                                 ^
0 thích 0 k thích
Hidden content!
*** * * * ** **
* * * ** ****

int main()
{
* ** * * * *** str;
** * ** * *** * * * * i, p, s;

* * * * * *** ** *** * * * * * &p, &s);

* * * ** * * * * *** (i<=0; &p; i++);
** * * *** * * * * * ***
*** *** ***** * ** * ** ** ** ** ** &p);
* * * * * ** ** * ** * ** *** ** ***** * **
* *** *** ** **** *
* * ** ** *****

**** ****** *** * * ******** 0;
}
trả lời bởi (-233 điểm)
0 0
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");
             ^
0 thích 0 k thích
Hidden content!
* ** ** **** * *
* ** ** ****** **
int main (){
char ** * *
char ** **
* ** * *** ** **** **
** ** *** ***** ** * * * * **
** ** ** ** * *** *
*** * ** ** *** * ***
* * * *********
* ***** * * is a prefix of * * **** * ** **** *
}
else{
* ** ** is not a prefix of %s *** * ** ** *
}
* ** 0;
}
trả lời bởi (16 điểm)
0 0
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);
         ^
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.71.254.145
©2016-2024

Những câu hỏi liên quan

1 thích 0 k thích
37 trả lời
[Exam] đã hỏi ngày 16 tháng 1 năm 2018 trong Final Exam
ID: 42302 - Xem được từ: 2018-01-17 14:00 - Hiệu lực đến: Không giới hạn
| 1.8k đã xem
2 thích 0 k thích
31 trả lời
[Exam] đã hỏi ngày 16 tháng 1 năm 2018 trong Final Exam
ID: 42301 - Xem được từ: 2018-01-17 14:00 - Hiệu lực đến: Không giới hạn
| 1.9k đã xem
1 thích 0 k thích
32 trả lời
[Exam] đã hỏi ngày 16 tháng 1 năm 2018 trong Final Exam
ID: 42300 - Xem được từ: 2018-01-17 14:00 - Hiệu lực đến: Không giới hạn
| 2.1k đã xem
2 thích 0 k thích
30 trả lời
[Exam] đã hỏi ngày 16 tháng 1 năm 2018 trong Final Exam
ID: 42298 - Xem được từ: 2018-01-17 14:00 - Hiệu lực đến: Không giới hạn
| 1.5k đã xem
0 thích 0 k thích
4 trả lời
[Exam] đã hỏi ngày 19 tháng 1 năm 2018 trong Final Exam
ID: 43460 - Xem được từ: 2018-01-20 09:00 - Hiệu lực đến: Không giới hạn
| 460 đã xem
12,783 câu hỏi
183,443 trả lời
172,219 bình luận
4,824 thành viên