1 like 0 dislike
8.7k 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 | 8.7k views

37 Answers

0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <string.h>


int isprefix(char prefix[], char txt[]){
**** ** ******* * *** i,flag=1;
*** * * * ** ** * * *** ****** ** * ** *
** * * ** ** * * ** ** * * * *** * **** * * * *** *
* * * ** ** * *** * * ** **

** **** ** **** **** * flag;
}


char prefix[100],txt[100],i;

int main(){
* * ** *** * * * *** * * * ***
*** * * * * * ** ** * * ** * ** *

** *** ** *** **** * * * * * * * * **** ***
* * ** * **** **** ** * ** *** * ** * * * ***** * * * ** ****** ** * *
* ** * * ** * ***** * * * * * * *** * * * * *** is a prefix of ",prefix, txt);
* ** ************* * ** *** ** ** ** * *** ********** *** * *** ** ***
** * * ********** ******
* * * * * * * * * * ** {
*** * *** ** * ** * * ** * ** * ** * * *** * ** ** *** ** * *** * * * * * ** ***
* ** * * * * *** * ***** * * * * * ** * * ** * * *** is not a prefix of ",prefix, txt);
* * *** *** * ** * *** ******* ** * ** * **** ** *** * ** ** * * ** ***** ** * * ** **
**** ** * * ** * ***
* ** ** *** * *** * ** 0;
}
answered by (-286 points)
0 0
prog.c: In function 'main':
prog.c:24:16: warning: too many arguments for format [-Wformat-extra-args]
         printf(" is a prefix of ",prefix, txt);
                ^~~~~~~~~~~~~~~~~~
prog.c:29:16: warning: too many arguments for format [-Wformat-extra-args]
         printf(" is not a prefix of ",prefix, txt);
                ^~~~~~~~~~~~~~~~~~~~~~
0 like 0 dislike
Hidden content!
* ******** * * ** *
** * ** ** * ** * ***
char prefix(char string1[],char string2[] )
{
**** * * ** * ** i,a;
*** ** ***** **** ** *** *
** ** ** * * **** ** * **** * *
*** * **

*** * * ** ** * * * * * * ** ** * *
  {
* * ****** ****** ** ** * * * * **** *
* * * ** * ** * * **** ** * **** ** * * * * ** *
* * * * ********
* * ** **** * * *** **** * *** *
***** **** * * *** * * ** is a prefix of %s", string1,string2);}
** * * * ** ** ** * * is not a prefix of %s", string1,string2);}
** ** *
*** *** * *
** * * *
**** * **** * *** ** ** * ** * *** * ** ** * * * *
* * *** *
** * * *** * ** * *** * ** * * **** *
* * ** ** * ******** * *** *
* * *** *** ***** * ** * * *** ** * * * * * *
** * ** * ****** ** ** * **** *** **
* * * * **
** ** * * ** * * *** ** * *
** ** *** ** * * ** *** ** is a prefix of %s", string2,string1);}
**** ** ** * *** ***** ** *** is not a prefix of %s", string2,string1);}
** * ******

}
int main(void)
{
* * ** * * ** ** chaine1[1001], chaine2[1001];
** ****** * * * *** **** * **** ** * *
*** * ** * ** ** ****** *** *
* **** ****** * * **
** **** ** ***** 0;
}
answered by (-168 points)
0 0
prog.c: In function 'main':
prog.c:37:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1001]' [-Wformat=]
   scanf("%s\n",&chaine1);
           ^
prog.c:38:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1001]' [-Wformat=]
   scanf("%s",&chaine2);
           ^
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 like 0 dislike
Hidden content!
#include<stdio.h>
* * ** * * * * ***
* * **** *** ** **
int main(void)
{
* ***** ****** * **** ** * str1[100],str2[100],i;
** ** ***** * *** * ** * *** * ** ** **
* * **** * ** * ** * * **
* * * * ** **** *
** * ** * ******* ***** * ** * ** ** *** ** * ** * **
* * ****** * * * * * * ** * * **** ** ****** * * ** * * ** *** * * * * * ** ******* is not a prefix of %s",str1,str2);
* ** * * **** *** ** * ** ** * * * **** **** ** ** * * * ** * * *** *** * * 0;
* *** * **** * ** *** * * ** * **** * ****** * * ** ***
** * ***** * * * ** ** **

 printf("%s is a prefix of %s",str1,str2);
* * * * *** * **** * 0;
}
answered by (-304 points)
0 0
prog.c: In function 'main':
prog.c:6:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
     scanf("%s%s",str1,str2);
             ^
prog.c:6:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
     scanf("%s%s",str1,str2);
               ^
prog.c:7:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str1);i++)
               ^~~~~~
prog.c:7:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:7:22: warning: passing argument 1 of 'strlen' from incompatible pointer type [-Wincompatible-pointer-types]
     for(i=0;i<strlen(str1);i++)
                      ^~~~
prog.c:7:22: note: expected 'const char *' but argument is of type 'int *'
prog.c:10:23: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
             {printf("%s is not a prefix of %s",str1,str2);
                       ^
prog.c:10:45: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
             {printf("%s is not a prefix of %s",str1,str2);
                                             ^
prog.c:15:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
  printf("%s is a prefix of %s",str1,str2);
           ^
prog.c:15:29: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
  printf("%s is a prefix of %s",str1,str2);
                             ^
0 0
prog.c: In function 'main':
prog.c:8:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str1);i++)
               ^~~~~~
prog.c:8:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:8:15: note: include '<string.h>' or provide a declaration of 'strlen'
0 0
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()
{
* *** * * * * * * * * ** str1[100],str2[100];
** * *** *** * * * ** * * i,c=0;
**** * * ** ** * **** * * ** ***
* * *** **** * *** * *** * ** * * * *****
* ** * * ** * *** * **** * ** * * *
** ** * * ** * * ** * *
** ***** ** ******** * * * * * *** *** ** * *
*** * * ***** *** * *** ** * ** ****
* * ** ** * ** * ** * ** * * ** *** ** ** * * * *** ** * *
* **** * * **** * * ***** ** ** * * * *** * ***
    }
* ** * ** * * * *
* ** ** * * ** * * ***
* ** * *** * * ** * **** * *** ** ****** * ** is a prefix of %s",str1,str2);
* ** *** **** * **
* * **** **** * ** ***
* * * * * * * *
*** ***** * ** ** ** * * * * * * * **** * * ** * * ** is not a prefix of %s",str1,str2);
* * * ***** * * * **
}
answered by (-140 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 <string.h>
 int main(void)
 {
** ** * * ** *** * ** ** * pre[100],str[100];
*** **** ** ** * * *** i;
** * * ** * * * * * * * *** *** ****
** * * * * * ***** ** ** ** ******* ** *****
***** ***** * ** * ** * * * ** **** ** *****
    {
* * *** * *** * * ****** * * * * ** * * ** ** *** ** * *
* * ** * * ******* ***** **** **** **** * ** * ** *** * **
* * ** * **** * * ** *** * * ** * **** * * **** * * * * ** * ****** * *** **** *** ** * ** is a prefix of %s",pre,str);
**** *** *** * ** * * * ** * *** ***** * * ** * * * ** **** * ** * ****** * ***** * * ** **
******* ** **** ** ** ** **** * * * * **** * * * ** ** ***** *** **
****** *** *** ** ** * * * * * *** *

* ** *** ********** * ** * * ****** * ** ***** * * ** ** ** * *
* *** * * * **** *** * ** *** * * * *** ** * **** * **** ****** *** *** ******* *** * *** * is not a prefix of %s",pre,str);
** ** * * * ***** * * * ** * *** * * * ** ** ** * ** * * *** *** ** * * *** ***** **
* ** ** *** * * *** * *** *** ** * * * ** **** * ** *
    }
    return 0;
 }
answered by (-281 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<string.h>

int main()
{
* ** ** ** ** ** str1[100],str2[100];
** * * *** * ** * *** i,c=0;
* *** * ** ** * *** ***** *** * * * * ***
*** * ***** *** ***** * **** * ** **
* * * **** * * * * * * *** *
* ****** ** * ** ** *
* * * * **** * * * * *** * * **** ** **
** * * * ****** * **** * ** ******** *
** ** **** *** ** *** ** ** ** ** *** * * **** * * ** ** ** *** **
* * ** *** * * * ** * * * *** * ** * ***
    }
* * * * *** * * **
* *** *** * **** ** * * **
**** *** * **** ** ** * ****** ** ** * * * ** is a prefix of %s",str1,str2);
* ***** ****
** ***** ****** ** *** ** ***
*** **** * *** ***** *** **
* ** * ** ** * **** ** * ** * * ** ** * * * ** * is not a prefix of %s",str1,str2);
*** * ** * ** *
}
answered by (-323 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 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 by (-254 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 <string.h>
int main()
{
* * ** **** * * n,count;
* *** ** * * * *** *** * a[100],b[100]={0},c[100]={0};
* *** ** ***** ** * **** * * * %s",a,b);
* * * * * * **** ***
* * * *** **** **** ** * ** ** ** * ** * ** *
**** * * * ** ** ** ** *** ***** *** * *** *** *
* * ** ** * * **
** * * **** * * * * ******** * * * ** ** ** * *
* * * * ** ** * * ** *
******** * ** * ** *** ** * *** * *** * **** ***** *
** * ** ****** ** * (strcmp(a,c)==0)
* **** ** ** ***** *
**** * * * *** * * * * *** *** * ** * ** ** is a prefix of %s",a,b);
**** ***** * * **
** * *** * * * * **
** * *** *** *******
** * * * * ** * ** ** * ** **** * * * * * **** *** is not a prefix of %s",a,b);
* * * * ******* *
********* * ** ** * * *** 0;
}
answered by (-229 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<string.h>

int main()
{
* * * ** * * * * String[50],string[50];
* **** * * *** ** a,b=0;
** * * *** **** ** * * ** ** * * * * *****
* * ** ** * * ** * ********** **

* * ** *** * ** * * ** * ** ** *** * *
* ** * ***** * * ** * * * * *
* ** ** * * **** ** * **** **** * ** ** * * * ** *
* ** * * * * * *** ** ** * ** * * *
* * * * * *** ** *** * *** *** * * *** * **** * * *****
**** * * ** *** * ** ********* ***** ** *
    }
*** ** * * * *****
*** ** ** ** *** * *
* * * * * **** * * * ** * *** * ** * * *** is a prefix of %s",String,string);
**** * ** ** * ****
** ** * *** **** * **** * *
* * ** * *** ** * ** *
* *** *** *** * * ******* * ** * *** ******** *** * ** is not a prefix of %s",String,string);
** **** * * * * * *
  return 0;
}
answered by (-107 points)
edited by
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
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include * ** ** *
#include * ***

int main()
{
* * *** * *** * * ** a[100],b[100];
***** **** * **** * * * ******* * %s",a,b);
* * ** * ** * ** ** * i,j,prefix = 1,len = strlen(a);
* ** ** * ** ***** ****** = 0 ; i < len ; i++)
*** * * * * * * * * ***
* * * ***** ** * ** *** **** *********** * ** != b[i])
** * * *** * ** ********* * ***** ***
* ****** ** *** * * ** * ** * *** *** * * * ** * ** ** ***** * * ** * = 0;
* ** * * * * * ***** ** ** * * ** * * ******* ** * * *** * * * ** * is not a prefix of %s",a,b);
** *** * ** ** *** *** * * * * * ** ** ** ** * * ** * *** * *
**** * * ** * ** ** *** ** *** * * ** * * **

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


* ** * ** * * **** **** * * 0;
}
answered by (-255 points)
edited by
0 0
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
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:108.162.216.175
©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
| 9k 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
| 7.8k 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
| 9.1k 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
| 7.1k 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
| 1.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users