0 like 0 dislike
7.5k 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 | 7.5k views
0 0
12345

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
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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));
              ^
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));
              ^
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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);
               ^
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);
               ^
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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("");
            ^~
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("");
            ^~
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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.
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'
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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.
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.6.235
©2016-2025

Related questions

0 like 0 dislike
57 answers
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings
ID: 41431 - Available when: Unlimited - Due to: Unlimited
| 11k views
0 like 0 dislike
29 answers
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings by thopd (12.1k points)
ID: 41436 - Available when: Unlimited - Due to: Unlimited
| 7.2k views
0 like 0 dislike
53 answers
[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
| 10k views
12,783 questions
183,442 answers
172,219 comments
4,824 users