1-11 Exercise 3: Prefix of a string

0 like 0 dislike
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

 

[Exercise] Coding (C) - asked in Chapter 13: Strings by (12.1k points)
ID: 41439 - Available when: Unlimited - Due to: Unlimited
edited by | 2k views
0 0
12345
commented by (-329 points)

27 Answers

0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>

int main()
{
   **    **   * * *    ** * n[999],str[999];
**  *   **   ** **     *  * *** ***  ** *  n);
* * *** * ***** ** * **** * * * ** * **  *  str);
* **  *  *  **  **** *** * *** * *      ** * *  **    *** *   *** **** *   
* ** ** ***  *    ** ****  **   **      ***   * ** *       *  * *** * * ** ** *          **  ** *   is a prefix of %s",n,str);
  ** ****  ****** *** * ******* **    **   * *  ***  
** ****          *  **  * **   **   * *** *     **   *  ** * 
** ** **   **   ***  * *   ** * ** * * ****** *    ** * *  **   ** **   * ****** *** * **  * *** *** is not a prefix of %s",n,str);
*** * *     *** **     *** *** **** * *** * 
 ***    *  * *  **    ****  *  **** 0;
}
answered by (-249 points)
edited by
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
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)
0 0
prog.c: In function 'main':
prog.c:9:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t {aka long unsigned int}' [-Wformat=]
     printf("%d",strlen(n));
              ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:9:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t {aka long unsigned int}' [-Wformat=]
     printf("%d",strlen(n));
              ^
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!
   * **    **   ** 
 * ********* * ** **  

int main()
{
****** *  **  * ***    ***   i,plen;
 *   * ****  *  ***  ** **    ****** 
*     *      **    *      *  * * ***  ** ** ***
 * **   * *   ***  * ** * * ** *    

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

 * **    ** *** *** * * *  ******    ***  i++)
*    ***  *   *****  * **

    **   ***** **
*    *  *
* ** ***  *  ** is not a prefix of ** **** **  
return 0;

 }


if (i==plen-1)
*** ** ***** *** is a prefix of  *******  *  

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


}
answered by (-336 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
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() {
 * **   *  * ***      *   **  * p[1000],s[1000];
  ******  ***  ** * ** ***  **  i=0,re=0,len;

 *    *   * * ** ** **   ******       *   **  **** p);
**    *   ***** ** *     * *** * *  **  ***  ***  s);
**    ***** *      *** *** **  **

    *  ** * **   * * * *** * * *  *   ***  *  **** {
 * ***   *** ** **  *   ** **  *   ** ***** **  ** ***  *    *** {
   *   * *   ** ** ***** *  *   * *  ** *  **** ** * ** ** * ** **  ** *****   ***** *
 ***  *      ***** **       ***   **** **** *   **  ** * **        * ** ** ***  *    
* *  * ****    * *  * ***  * ** **   * * *  * *  *     **  * 
  *    ** *** ** ** *  
***** **   *   *  * *     *  **  * {
 **** * *   *  *   *** * *** * **     *  ******* ** * ** *** * is a prefix of %s", p, s);
* * *    *******    ***    
**   * *** *****   ***  *  * ** if(re==1) {
***  * ** **** * *    **    *    *  * *    * * ** * ***** * * *   *  is not a prefix of %s", p, s);
    }
}
answered by (-120 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
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()
{

*   * *  * ** ***   * * *  **** a[100],b[100],c[100];
  ** *  ****     * ** **  ***  *   *** * ******  * *** 
    int l1,l2,i=0;
** ** *  *** *   *  ****   ***  * * 
**  ***    * **  ***     ***  * 
***   * * **  * * ** ******* * ** *  * **
 *   *  *   **  *   ******  **** * * ***    *  **  *****  *  * **  is not a prefix of %s",a,b);
    }
 ****  *   *   ** *** * *  ** *    if(l1<=l2){
 **   ***** **  **   * ** ** *  **  ** **   *   * prefix = 1;
 * *** * * **** ***** *  *  ***  * ***   * * * *   *** * *  **    
* **** **   *      *** * * **       * *       **  ***  **** **   * * * *  ** **** (a[i]!=b[i]){
 ****   ** **** * ********* **    * *** * * **  *   * * ** ***          * * * *      ******   ****   ** **   *      ** * is not a prefix of %s",a,b);
*   *****   **  ***    **    *** **   *      * * * *  * *     *   * **    * ***      * * *    *****    * *** ** *  = 0;
 **** *** * *   **    ** *    * ******  *** * *******     * ***  **  **** ***    * * ***   ** * * * *
 ** ***  **** *    ***  ****     * * * * **** ****  *** **     ***  *** **  
 *** ***  *   * *   * * ******   ** ****    ****
 **** *     **** *   * *   *     ** *** **** *   ****** == 1){
   * ****    **  *   ** *   *   ** * ******* **  *** **   * * *  ****       * **   **   *  *  *   is a prefix of %s",a,b);
 **   ****** **  *   ** *   * **  *  ** ** *  ***   **  * *
    }
}
answered by (-329 points)
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:8:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:7:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:7:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
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
-----------Re-judge-----------
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
edited by
0 0
prog.c: In function 'main':
prog.c:15:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
     printf("");
            ^~
prog.c:17:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
     printf("");
            ^~
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:15:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
     printf("");
            ^~
prog.c:17:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
     printf("");
            ^~
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 **  * **    ****  * 
#include     ** *** * 

int main(){
*  *  **** ** *** * * **  * p[100],s[100];
*   **        ***  **        ***  *   *   *** ***  * 
 ******    * * * * *** ****   bf=1;
* *  *  ** ** * ** ** ****       * * * ** * ***  ** 
**   ***    * **  *  ** ******  ** **  **   ** ***    *** ** **** bf=0;
 * ***** ******** *  * *

 * ** ****  *  ** *    * ** *******   *   **  is a prefix of %s",p,s);
 * **  ***** *** ** *  * ** *** **  ****  ** is not a prefix of * * *** * * *
     *** ** * * ***   *  * *  * ** 0;
}
answered by (-116 points)
0 0
prog.c: In function 'main':
prog.c:5:5: 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:6:5: 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__;
              ^~~~
prog.c:8:19: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(int i=0;i<strlen(p);i++){
                   ^~~~~~
prog.c:8:19: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:8:19: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/cclwPOj6.o: In function `main':
prog.c:(.text+0x26): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:8:19: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(int i=0;i<strlen(p);i++){
                   ^~~~~~
prog.c:8:19: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:8:19: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
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
-----------Re-judge-----------
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()
{
   ***    *** * * **** ** *  * i,count=0;
* ******     ***** *** *    *   string1[100];
 **   ** ** ****       ** *   string2[100];
    ****** *  ** *** * *** ** ** ** ** *  * ** **  *   *
**       ***  ** *   ** ** * ** *      ***** **

 *   *   ** ** *** ***************  ** * ** *** * *
* * * * ** *      **** *****
**  **   *  *   *   * **   ** * *  * **    **  ** **  *   **** *     * *** 
*  *  *     *  *  * ** *  ****  * * **      * ***** **  ** 
**  ***   ** *  *   ** *   **** ** *  *   ***   * *  *   **  *  *** ****      **  *    *** 
**** * ****  ** **   ***  **** *** ** ******    *** *
    }
*   **      ******  ******* *** *  *
*    * *  *  ****  * **** * 
 *** *  *     ***    *  *       ** ****  *** ******  * **     ** is a prefix of %s",string1,string2);
 **  *  *  ** ** *    *** *
     * ***  * * *  ** *    **** ** *
** *  *   **  **** * ****    ***
**  *  **** * *  *  * **   * ***  * *  ** **  * **   *   ****  is not a prefix of %s",string1,string2);
    *  *****  ** *******  ***
    **      * ** ****   ***        0;
}
answered by (-323 points)
edited by
0 0
prog.c: In function 'main':
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(string1);
     ^~~~
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:10:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(string2);
     ^~~~
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/ccIBxtbQ.o: In function `main':
prog.c:(.text+0x2f): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
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
-----------Re-judge-----------
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:172.70.131.183
©2016-2024

Related questions

0 like 0 dislike
57 answers
1-11 Exercise 1: UPPER and lower letters
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings
ID: 41431 - Available when: Unlimited - Due to: Unlimited | 2.6k views
0 like 0 dislike
29 answers
1-11 Exercise 2: Reverse a sentence
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings by thopd (12.1k points)
ID: 41436 - Available when: Unlimited - Due to: Unlimited | 1.8k views
0 like 0 dislike
53 answers
1-4 Exercise 3: String details
[Exercise] Coding (C) - asked Jan 4, 2018 in Chapter 13: Strings by semicolon (5.2k points)
ID: 40715 - Available when: 2018-01-04 18:00 - Due to: Unlimited | 2.5k views
12,783 questions
183,443 answers
172,219 comments
4,824 users