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:172.71.254.8
©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