Final Exam 2 (20%)

1 like 0 dislike
6.8k 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 | 6.8k 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:172.69.59.206
©2016-2025

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 | 7.1k 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 | 6.1k 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 | 7k 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 | 5.3k 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 | 1.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users