Final Exam 2 (20%)

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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
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Hidden content!
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int main()
{
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}
trả lời bởi (-258 điểm)
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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);
           ^
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0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
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0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
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0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
đã bình luận bởi (4.3k điểm)
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
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0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
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0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
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0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Wrong output
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0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
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0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
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0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
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0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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Hidden content!
* **   *   ** **  *** **
     *  * ** *  * 
int main()
{
 ****** *    * * ***  ap;
** **  ***  *****      **********     *** *   || ap=a)
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 *  ****  * *** **
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 *  *  *  *  * ** * *  * ** ** *  *  *  *   *****    * **  **   ****   ** 
  
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
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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
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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
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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
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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
            }
            ^
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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
            }
            ^
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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
            }
            ^
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Hidden content!
* *** * ***  **  * ** *
  **   * ** ***** * ***   

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

int test(char p[],char s[],int pl, int sl)
{
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{
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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)
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Case 0: Correct output
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Case 2: Correct output
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Case 0: Correct output
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Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
*** ***    ** *   * **** * a[99],b[99];
    int l,i;
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 **  *  *   **   ** ******** *** * **  *  *    *  ** **  ***
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 * ****  *  *    *     *  *    *  ******   ***     ***   * * ** *
** **  * **  **   * * **  * ** * * * ***     *    **   
******  ** * ** *  ** ** * *** *** **  ***  *  *  * *   **  *  * ***** ** *** *  ** * * ****  *   *  not a prefix of %s",a,b);
  * *********** ******** * ****    ** * *  **    ***      * * ** **   * * * ****  **   *
* ** **  ** *   *  **   ** ** *  **  * **   *     ****** *   
    }


}
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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])
{
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* **** * * *  * **  ***  **
 ** **    ** *  ** **  *  ** 

   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)
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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);
                    ^
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0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
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0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
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Hidden content!
 ***    *  ** * *     
  *** * *     *   * * 

int  *   
{
*   **    **** * **    *   *   * * * ** ** * no idea, I * ****   even do it in the ****       **   **
* *  **** **   ****  **  **    ** 0;
}
trả lời bởi (-168 điểm)
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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)
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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.
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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__;
              ^~~~
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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);
             ^
đã bình luận bởi (4.3k điểm)
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");
                                 ^
đã bình luận bởi (4.3k điểm)
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");
             ^
đã bình luận bởi (4.3k điểm)
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);
         ^
đã bình luận bởi (4.3k điểm)
Trang:
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