1-11 Exercise 3: Prefix of a string

0 like 0 dislike
4.3k 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 | 4.3k 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:172.69.58.44
©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 | 5.7k 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 | 4k 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 | 5.3k views
12,783 questions
183,443 answers
172,219 comments
4,824 users