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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{
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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
 *  ***** **    ** *    **   * ** c;
** * *   ** ***** ***  * *** *   a[100],b[100];
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    }
** *     ******* *      ** *  * ** 0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
*  ** *****  ***  * **** **  n,count;
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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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**    **  **    *** *****  * * ** *   * ** *** * * **  ** *  * 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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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];
    *     **** * ******* ** n ,i;
*   ***   ** **   **  * **  **  *   ****
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****  *   *****      ** **** *****  ** *  **     ** ** **   *   *** * * ** * ***   ****  ***  *
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*  ****  ***  ** ** **  ***** 
* * ** ** ** ***  * *   * ***  **    *    ************  **   *      *** ** * *  ***

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


}
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