Final Exam 2 (20%)

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 *** **    * * ***
#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:172.70.131.166
©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 | 9k 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 | 7.8k 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 | 9.1k 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 | 7.1k 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 | 1.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users