1 like 0 dislike
10.5k 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

 

[Exam] asked in Final Exam
ID: 42299 - Available when: 2018-01-17 14:00 - Due to: Unlimited

retagged by | 10.5k views

37 Answers

0 like 0 dislike
Hidden content!
#include * ** * *
#include * *** * *
int main()
{
* * ** ** ***** * ******* A[99],B[99];
** * * * * ** ** * ** **** ** ****
* * * ** * **** *******
* ******** * ** * * ** *** * **
** * * * * * ** ** * ** ** * * **** *** * is a prefix of %s",A,B);
*** ** * * * ** * ***
* ** * **** ***** ** * * ***** ** **** * * * * ** * is not a prefix of %s",A,B);
* * *** ** * *** *** 0;
}
answered by (-249 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!
** ** * **
** * ** ** * *

int main(){
* * * * ** *** ** pre[100],str[100];
* * ** *** *** **** ** **** * * * ** * ** ** **** *
** ** ** * ** **** * flag=1;
** ** *** ** ** ** * **** *** ** ** * * ***
* ** ** ** ***** **** * * * ****** * *** ** *** * *** ****** flag=0;
** * *** ** * ** * **
* * * ***** ** * * * ** * printf("%s is a prefix of ** **** **
* ** * ** ***** *** ** printf("%s is not a prefix of * * * ***
****** ** *** * ** * 0;
}
answered by (-116 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 like 0 dislike
Hidden content!
#include * ** ***
* * * * * ** **

int main()
{
* ** * * ****** *** **** * * * * * *
*** * * * * * *** * ** * 0;
}
answered by (-108 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 like 0 dislike
Hidden content!
#include<stdio.h>
#include<string.h>

int main() {
** *** ** * * * * ** a[100], b[100];
** * **** ** ** * ** i,j,len,re=0;

* **** ** * * ** * ** * *** ** **** * {
* ** * * * ** *** * * * ** * * ** * ** * ***** *
***** * **** **** * * **

* *** *** ***** * * *** * * * ** ** a);
**** *** *** * * * * ** ******* b);

***** * ** ** * * *** **
** * ** * * ** *** * *** {
* * ***** *** *** * ** *** * * * * * * * * {
*** *** * ***** * *** ** * * *** * **** ** *** ** * * * ***** * * **** *
** * * * *** ** ** * * ** *** ** * ** * ***** ** * ** * * ***
* * ** * ******** * * * *** * ** **** * **
    }

******* * * **** **** * {
* * * *** * ** * * * * **** *** ****** * * ** * **** * * * * * is not a prefix of %s", a, b);
* * ** * * ***** *
*** * * * ** ** * * ** if(re==0) {
*** * ** * ***** * ** ** * *** * * **** * * * ** is a prefix of %s", a, b);
    }
}
answered by (-120 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 like 0 dislike
Hidden content!
# include <stdio.h>
# include * * * * *
# include * ** * ******

int prefix(char p[],char s[])
{
** *** * ****** * ** * * * * * **** ****
* * * ** * *** *** **** *** * *** * * * **** * * 0;
*** **** ******* ** *** ** * * *
* ** * * * *** * *** **** * * *** * 1;
** ** * **** ** **
* * * ****** ***** * * * * ** * * * *** ** * **** 0;
}

int main()
{
* *** ** ***** * * ** p[999],s[999];

****** *** **** * **** * * *** *** * *
* * * * * ** ** *** * * * *** * **

*** **** ***** *** ***** * *
****** ** ** * * * ***** **** * * ****** * * * is a prefix of %s",p,s);
* *** * *** * * *** **
***** * * ** * ** * * ** *** ***** * **** * ** *** * is not a prefix of %s",p,s);

* * * ** * * ******* ** * * ** 0;
}
answered by (-16 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 like 0 dislike
Hidden content!
#include * * ** *
#include * * * * *
#include ** * ** **
 int prefix(const char p[100],const char s[100])
 {
** ** *** *** * *** * * * * ****
* **** ** ** * * * * ***** * ** * * *** ** * 1;
** ** * ******* * ** * 0;
 }

int main()
{
*** * * * * ** ** * **
* * * *** ** * * * * **
**** *** ** * ****** * * **** ***
* ******* * ** * * *** ** * * ** * *
* **** * ** ** * **** * *** * ** * is a prefix of ** **** * *
* * * ****** * * ** *
*** *** * * * *** ** ** **** *** * * ** ** * is not a prefix of ** * ***



*** * * * * * *** 0;
}
answered by (-196 points)
0 0
prog.c: In function 'main':
prog.c:9:8: warning: implicit declaration of function 'prefix' [-Wimplicit-function-declaration]
     if(prefix(p,s))
        ^~~~~~
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include * * ***
#include <string.h>
int main()
{
** * * * ***** ** * ** * ** ** a[100],b[100];
** * ** ** * **** *** * * * * ** %s",a,b);
** **** * * * * ** n=strlen(a);
* * * ** * ** * * i,prefix = 1;

* * **** * ** ** * i<n; i++)
* * ** ** * * * **
** *** * * *** * * ** ******** ** ** * * * * **** != b[i])
* * * *** * * *** * *** ** * ** ** * * ** *
*** * * * **** ** ** * ** * *** * *** * * * * * * ***** * * * = 0;
* ** * ** **** * * ** * * *** ** ** * ** * *** * ** ** ** is not a prefix of %s",a,b);
*** ** * ** *** *** * * * *** * ***** ***** **** * * ********
** * **** * * * * ** * ** * ** ** *
***** **** ** * ** **

** ** *** * * * ** * *** * * ***** * == 1)
* *** **** * ***** * * * **** * ** *** * ** ** is a prefix of %s",a,b);

***** ** *** ** ***** ** * 0;
}
answered by (-127 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     int n=strlen(a);
           ^~~~~~
prog.c:8:11: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:8:11: note: include '<string.h>' or provide a declaration of 'strlen'
0 0
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:172.70.100.82
©2016-2025

Related questions

1 like 0 dislike
37 answers
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42302 - Available when: 2018-01-17 14:00 - Due to: Unlimited
| 10.8k views
2 like 0 dislike
31 answers
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42301 - Available when: 2018-01-17 14:00 - Due to: Unlimited
| 9.4k views
1 like 0 dislike
32 answers
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42300 - Available when: 2018-01-17 14:00 - Due to: Unlimited
| 11k views
2 like 0 dislike
30 answers
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42298 - Available when: 2018-01-17 14:00 - Due to: Unlimited
| 8.6k views
0 like 0 dislike
4 answers
[Exam] asked Jan 19, 2018 in Final Exam
ID: 43460 - Available when: 2018-01-20 09:00 - Due to: Unlimited
| 2.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users