Final Exam 2 (20%)

1 like 0 dislike
15.5k 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 | 15.5k views

37 Answers

0 like 0 dislike 
Hidden content!
#include ****   * * **
#include ***** * ***   
**  ****   *** ***   *  
 *****  *       **  *

int prefix(char a[], char b[]){
int i, j,n;
int cnt=0;

n=   *******  

 *     **   ** ** * * *      * ** *  **
 *       **   *** * **  * **  *  **  == b[i]){
 * *      **  *      ****  ** *    ****   * * **** ****  
  **    *******     **  **    **

****  * * ** ** *
if (cnt == n){
* * ***    *    ** **  * **     * * * **  * **  *  *  ***   1;
**** * *  **    *   * ** *****  ** * ** **        * *  **  
 * **  ** **  *  * * ** **
*** *** ** *** ****** * * * ***** ***   ***** * ** ****  * **** 0;

}

int main()
{
**   * *  ******   * s1[100], s2[100];
 **    * * ** * *** i,j;

*** ** ** *  *    *    **   *   *  *     s1);
   *** ** * *  *  **    *  *** ***   ** * ** s2);
  * * * **   * * ****  (prefix(s1, s2)){

  ***  * ** *** *  **   * **  * **  *** *    * *   *   **  * is a prefix of %s", s1,s2);
 ** ** ****** **** ***  *  *  *** * *** ** ** ***
 ****   *      *  ** **    *     *    *  * * **
 **  *  ** ****  *    ** *   ** ** *      *** *        *   ******* **  **  *** *  * is not a prefix of %s", s1,s2);



}
answered by (323 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 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
 ** ***     ****   * ** ** * c;
* *    ***    * *  *** a[100],b[100];
 * *** ***  *  ** * * * ** ******     **** %s",a,b);
** **** * *  ** ** *** *  *****   *     ***** **
 **     ***    **** * * **    *   **    ** *   ***** * * **  0;
 ****  **      *  ***    ****     *  ** %d",strlen(a),strlen(b));
*** ****      ***  *    * * * *  **** * **   
***   ** **** **  ** *    ** * *       * *   **  ** ** **     ***  *** * *  *   * **  * * *  *   * 
 *** * * * **    ** * ********      *****   ***  * * *** *** * * **  * *  ** ** **   * **   * **     **   * *****   ** is not a prefix of %s",a,b);
*  * **    **    * * * * * *****  * * * ** ****     *   * *  *  ** **  **      *  * * *  * * **    **  
***** * * **  **    * **** *  *  * ***  **  ****   *   *  *** ***  * *  *  
 *  *  * ***   *** * ***  **  ***  *  * ** **    * *** **     **  *  **    * *  * * if(c==strlen(a)-1)
**  * ***  ***   ******  **** *    **   **   **  *** * *  *  ****     * * * * * *  * *     ** *** ** *  *  *  ** is a prefix of %s",a,b);
    }
    ***  *  * **     * * ** * *   0;
}
answered by (-498 points)
edited by
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
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 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
   *    *****     ** * ** ** ** n,count;
********    * *  ******  *     * * * * ***** * * *  * 
**  **   ******* * *  **** **   **  *  %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 (-284 points)
edited by
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",&prefix,&word);
             ^
prog.c:8:16: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s %s",&prefix,&word);
                ^
prog.c:10:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(prefix);++i)
               ^~~~~~
prog.c:10:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:10:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:18:6: error: expected '(' before 'printf'
      printf("%s is a prefix of %s",prefix,word);
      ^~~~~~
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<stdio.h>
#include<string.h>
int main()
{
 ** **** ***    *  *  * *****   a[100],b[100];
  * ***  * * * ** ***     *     * *** *  *   ** *  *
    int l1,l2;
* * *  **** ****  **  * * * ***   ** 
** *  **    * *  *** *  ** *   *    ** 
*   ************ **    ** *****  ** ** *
 ****        **** ****  ****  **  ** *  * * *    **    *   ***** is not a prefix of %s",a,b);

    }
* * * *** * ***  *** ***  **   if(l1<=l2){
  * * ** * *** * *** ******  * ***      *    ** **  **  * prefix=1;
**  ***** **** **  *   * *****     * **** * ****  * ***  * i=0;
* **    ****  *    ** *  **    * *******  *  ****   *     *  **     
* * *   * ** ** * **  ** **  *  **  * ** *** *  **  *** *    *   **** * * * * ** * *  (a[i]!=b[i]){
   *  ****  ** * * * * *  *  ** * ** **   *   *  *  *  *****   *** **   **  * ****   *  * *** * *   *   *** * *    *  ** 
*  *  *  ****   **** * *  *** ****  *  ***** *** ** * **    **  **     * **  ** * * *  **** **      *  *** ***    
*  *  * *  * ***  *   ********  * *** ***** ** * ***         *  ***   *   *  *   ** *


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


    }


}
answered by (-329 points)
0 0
prog.c: In function 'main':
prog.c:5:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:5:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
prog.c:7:8: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     l1=strlen(a);
        ^~~~~~
prog.c:7:8: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:8: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k 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 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:6:15: 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 like 0 dislike 
Hidden content!
#include<stdio.h>
**   *     **  * ***
int main(void)
{

* ******  ***  *  * ***   ***  pre[100];
 * ***  ****   ** * ****     word[100];
 ** *** ** *  * **    ** * ***   * %s",pre,word);
**    * **        *   **   *  *  *    * ** *
*   *    * * *** ***     ****  ** ** * 

*****  **  *** *  ***   * i;
 ** **  ***      * *  *   **** *   * **   ***   * 
* * **   *  *       *     * *  
* * * ** *  *  *  *  *  **   ****** **  ****   ****** *   * *    *****  **   *
* * **    *  ** * * ****** * ** *  *      **** * * *  **  
*  * *   *  *** *    *** ** * * * * *  * * **   ***  * * *** *  * **  ***  * ** ** *   * * *   ******   is not a prefix of %s",pre,word);
* **      ****  * *  **  *  ************ ***     *    *  * * * * ** ***  ***   ** * * * *** 0;
    *   * ***  *      * *** ** *  ****   *** *    *  ** * 

 ** ** ***  * **  **  * ** ** *  **
printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 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",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
commented by (4.3k 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",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
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 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main ()
{
*   * *** * **  * *    *  * **** pre [100],a[100];
*  **  **   **  *    * ****** n ,i;
    *** **  **   ***** * *   ***  * 
**   ***  ***  **  *        ****  ***
 **        *  *      ** * **** *  * *** ** **** * *** 
**   ********* *** * **** ***
 *  **** **   * *    *** **  * *    **  **** *   ** ***  (n=0;n<strlen(pre);n++)
** **   * **** * ****  *   *  * *  **  *   ** ** ******  * 
 * *     ** ****    **** ***  **   *** **** **    ****   *  **  ******* *  * (pre[n]==a[n])
****    **  *  **       *   *  **  * *** * *  ***  * **   *  * ** ** * ******  ****** is a prefix of %s",pre,a);
 **   **    * ** *** **   * * * * * * *    *** **   *  * * ** * *   * ***  *    ***
***  ***   * *       * * *      *** * ** * * * *  * * ******** * *  ** **  * *  *     ****  **    ** *  ******* **    is not a prefix of %s",pre,a);return 0;
* *   *** * * ** *   ** *   *
*  ***   * ***   * *** *  ** *     * * **** **** ******  ** **    ** ** ****    * * *

 *         * **  * * * ** *  ** ***** 0;
}
answered by (-32 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include *  ***  * ** *** 
#include ** ***  ** * *  **

int main()
{
  *** **      *  **   **    ** * a[100];

 ** *  * *****   **    **    * b[100];

 *  *** ***   **      **  *  *  **  *  %s", a, b);

*** * **    * *  **  ****  len_a = strlen(a);

      **   *  *** * ***  * *   i = 0;

***  *  ***** *** ***        flag = 1;

**  *  *  ** *** * *     * * * *  *  = 0; i < len_a; i++)
 ***  **   *    * *  
*    **   ** *****  **  ************  *  ** **     ** *  *  ** * != b[i])
   * * ******   *  ** * * * * **   * ** *  *  *** *    
***  *** **   *******  ***     *   * ** *  * **     **  *  ** * *    * ** * ** * *  = 0;
* **  *     * *** *  * ***  ******* *  *  *  ** ** *
    * *****     *   * * *  ***

  *  ** ****  *** ***   == 0)
 *******   *    *** * * **  
 *** **  * ***        ****   * *   **  * **** *** * * **  *  *   *** is not a prefix of %s", a, b);
   **   *    **   * ***   * * **
 * * * ** ***  *** ***  * ** * *
  *     **  ** *  *    
* *  *****  *   * *** ******** *   *  *     * ** * **  * **  * *      is a prefix of %s", a, b);
 * ******* * ** **  *  *** *
 ****  **  **  *   ***  * ***  * 0;
}
answered by (-285 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<stdio.h>
*** ** **   **  *    ***  
int main()
{
*  **  *** ****  ****** ***  i,n;
     **    * *   *  *    * *   * * p[100],s[100],a[100]={};
 *** **   *   *  *   *** *  *  *   *  **   %s",p,s);
* *     * * * * ** *  ** *   ****  *
** *******  * *  *     *** ***     * *  
  **  *  *** *** *** *  ** *****        *  *  ****
** * ** ***  ****   ** * **  * **   
 * * * ***    *  **  * *   **  ****  **  *** ** ****  *  * ***** ** is a prefix of %s",p,s);
 *** * *******   **  **  * 
   ** * * *  **  *** ** 
**  **  * ****** * **  ** ****       * * * *  * *   **** * *    *** is not a prefix of %s",p,s);
* * **  *** * ** * ** *  ** 
 **    *      ** *  * *  ** ***   * *   ***     ** *  * **
 *  *****    *    *  ***   * **    0;
}
answered by (54 points)
edited by
0 0
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 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
    int i;
    char a[100];
    char b[100];
 ** ** * * ** * *  ** *  *** *** * * ** *  * **  
    scanf("%s",b);
    for(i=0;i<strlen(a);i++)
 *   *** *   ** * *****   *    *** **** ***   *** ******    * *
***** * ****** *    *  *   * **    **** **** ** * **  ***  ** * *   * ******  * != b[i])
    *   * **  *   * *    * ***** **  *  *  *  * **** *  ******** ***     *  *** **  * ****    *  * ** ** * *
**** *  *   *  ** ****** * ***   * *******  *  * ** * * * *    *** ** *    **   ** * **   * * * * ** * ** *    *  *** ****     *** ****  is not a prefix of %s",a,b);
    *   *   *****     * **  *   ** **  *    * * *  ** ***  **  **    * *   ** *** **     ***  * ****  **  * **  * ** *** ** *  *   **
** *******  **      * *  **    *   **  **    **  ** *   ***   *      * * * ** **** *****     ** *  * *
*  * **  *** ****  ** *   **     *   ****  *  ** *   *********** ***  * **   ******* **  ***  *   == b[strlen(a)-1])
*****  * * * *  ***** *** **  *  ** *  *****  * ** *  *  ** * ***  * * ***     *  ** **** ** ** *   ****   *
 **   ***     **    **** *      * * **  *  *** * *   ****    **     *    *  *** *      ****   *  * * ******* *    *   *  *  *  *** ** ****** * ****  * ** *  is a prefix of %s",a,b);
  *  ***  ** **     * * **  **   *  ******   *  ** ** *   * *     ******  * ** *  **  **  *   *   * * *    *     * ***   * ** * * * * *   **
*    ** * **** **** *** ** *    ***    *****  ***    * ** ****  *    *  *       *  * *  *      * ** * *   
**** * *   * ***   *      * ** *  * *  *  *   ** **   *  ** 
}
answered by (-301 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<stdio.h>
#include<stdlib.h>
#include<string.h>
#define n 100

int aa(char a[],char b[]){
*** * * *     **  * **  ***   ** *  * *  i;
***  ** * *  * **  *  *** *  *** *   **  ** (a[0]!=b[0]){
   ** *  *   ** *  *   **  *   ***  * *   ** ****  ****   * 0;
* *****    *  **   *****  ** 
* ***  *  ** * **    *****   ***  ** ********     **
 **    *  * ** *  **** * *  **   * *** ***    ** *  **  ***  *  *  a[i]==b[i])
***   ****  * *   *  ***   * *  *  * *** ****   **** *** *
***   ** ***** *  *****  * *     **  * *  *   **** *    * ** ** *   ***   ****** * 1;
      * ** **** * ** ***     * *   *  **  *  *  * * *** **** *  ***** *  * ****  *  * * 
 ****  ***     * * *** *****      **** *  *** *  *
    * *** ***  *** **  *  **    **
** **  ****   *    *** * * * * *** ** *  * 0;

}

int main(){
* * *** ***     *   *  * **** *** c[n],d[n],e[n];
 **  *** ** *** ***  *** *   *** * i;
* **  ** *   ** **   *   **  ** * %s",c,d);

      *  ****  ** *** *  **      
*   * ** *** ** *  * * *  ** * *** * **** *  *     ** **   **  is a prefix of %s",c,d);

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


}
answered by (-32 points)
edited by
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Wrong output
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Wrong 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:172.69.221.148
©2016-2026

Related questions

1 like 0 dislike
37 answers
Final Exam 5 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42302 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 14.1k views
2 like 0 dislike
31 answers
Final Exam 4 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42301 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 13.4k views
1 like 0 dislike
32 answers
Final Exam 3 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42300 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 16.6k views
2 like 0 dislike
30 answers
Final Exam 1 (20%)
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42298 - Available when: 2018-01-17 14:00 - Due to: Unlimited | 11.5k views
0 like 0 dislike
4 answers
[Makeup] Final Exam 2 (20%)
[Exam] asked Jan 19, 2018 in Final Exam
ID: 43460 - Available when: 2018-01-20 09:00 - Due to: Unlimited | 3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users