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:172.69.7.53
©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