Final Exam 2 (20%)

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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
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Hidden content!
#include *  *  * *   **   
#include *****     **   
 * *  * *** **   * * 
 *** *    ***  **  ****

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

n=  * *** **** 

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}

int main()
{
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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
*   ***  *  **   * **      *** * c;
**      * ********  * ** *** * a[100],b[100];
** ***   *  *      *** * ** ** ** %s",a,b);
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*   * **       ****  *** * ** * ** ****  * ******* ***  *  **  *   *  ** 0;
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    }
** * * ***      * ** ** ***   *** 0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
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*****  ** **   ***** **  ***
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}
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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);
      ^~~~~~
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Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
*  *     *  ** **   ***  ** a[100],b[100];
**    **          ****** *** **   **** *  * ** *   
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    }
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 ***   **    * * *   ****     * *  *   *  ***** *   ** 
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 ** *  *     * ** * **  **      ****  * *  * *  ** **     **    ** **  * is a prefix of %s",a,b);


    }


}
answered by (-329 points)
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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)
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Hidden content!
#include<stdio.h>
 ** **   ** *   * 
int main(void)
{

*** **** ** * *****  * * *  ******  pre[100];
* ** *****  **    *  ****  *** word[100];
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   *  ** *   * * *  *  **  **** *****
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***  * **  * ***   *  *  ** ***    *   ** **** *  ** 

    **** **  * * * *** **  *  *
printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 points)
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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)
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Hidden content!
#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main ()
{
*   ******* **  *  *  * **** **** pre [100],a[100];
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 *   * *    * **   * * *  *  ***   ** *   *     *  **   ****   * **  * * *      *  * *     
       * *********  ****   * * * ****     *** *  * * **  ****    *  *** * ** ****     *  * ** *       *  *** is not a prefix of %s",pre,a);return 0;
*** * * *** ** ***** *   *   **
**  * *    ***  ** *** ** *  * * * ** ** **  **     **  *** ** *  ** ***   **  

 ** ** **   *  ***   * *** 0;
}
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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;
}
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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);
 *  **  * *** *   *    **
 *   **  *    *   *     **
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    ****   ** *     ** 
 **  **     * *  ***  ***  ****** **     * ** **    
 * * **** *  **  *** * **** *  *  *   0;
}
answered by (54 points)
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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])
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 * * **  *  *** **** ** **  **  ** * **    *  **** *** *** *  **  *     ** **       * ****     **** *       ******  * *   ***  *      *** * * *     is not a prefix of %s",a,b);
* *** *   *  *  *** **  * *    *   * ***   * *     *  * **  **** *   **    ** *  *   * *   *** *  *       *    *** *  * **    *** * 
* *  * ***  *** ***      ** *  * **  * * **  **** *  *  *    *  ******** *   **  ***** **  *  **** ****** ** 
 *** *  * ***  * *    *** *     **** ***** * * * **    ** **  ***     * *  ***     ***** * * *  ** *  == b[strlen(a)-1])
*      **  **   *****    * ** *** * * ******** *  * *   ** *    * *    **** * *  **  ***       ****  **  *  
* ** * * *****    *  *    ** *****  ** *  **** *  **     * ***   *** ***** *   ** *  *  *    *  * *     *   ***  ****    **  *  **  **       ***** is a prefix of %s",a,b);
* **   ** * * ******  ***   ***** * * ******    **   * * *   *  ** **           * ** * **** **  * ****** ** *     ** * ** * *  ** *   *
 ** *  *   *       *    * **  *********   **** *    ***  *** *** **   *  *     ** *       * ** **  **  *
    ** ***  **     *** * *****  ** ****  *    *  *
}
answered by (-301 points)
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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)
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