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:172.69.58.45
©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