1-11 Exercise 3: Prefix of a string

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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

 

[Exercise] Coding (C) - asked in Chapter 13: Strings by (12.1k points)
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#include<stdio.h>
#include<string.h>
char prefix(char string1[],char string2[])
{
    int i,s;
*  * **  *  * ***    **   **
***  **  **  ***  ** ** * ** *  * *     ***  **   ***  
    {
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    }
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    {
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    }
}
int main (void)
{
    char chaine1[1001], chaine2[1001];
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  *******  **  *  ***  *          ** *   *   * *
**  *   ** * ** * * ** * * 0;
}
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#include <stdio.h>

#include <string.h>

int main()
{
 **  **     **  *** * *   * * lenght1,lenght2,c;
 *    ** *  * **    ** *** b[100];
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    **   **     ***
* **  *  * ** *  **   * ****  * *  0;
}
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Hidden content!
#include <stdio.h>
#include * ***    **    
#include *** ***** **   *
//#include <ctype.h>
#define n 100
int aa(char A[],char B[])
{
  ** *  *   * i;
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******* ****  ** * ***         * *   **  *** ** * *  *** ***  *  * * *** *
  }
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}


int main()
{
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* *** *   *  ** *    *     * *  *   *    * * *  * ***   * * *  is not a prefix of %s",a,b);
 **  ** **  ** ****  **  *  * 0;
}
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Hidden content!
#include   **  ** * * *
  * ***  * ** *  *  * 
int main (){
char * **** **
char   *  *** 
  *    **  **  string1: *        
 ******     *  *  * **     * *  
 **          string2: **  ** 
   *** * ****   *  ***  * 
  *  **** *     *  *
*** * * * * ***** * ***    *  *** * is * * *  *   of ******  **** * 
else
    **      * ** *********  *  * ****  *  is not prefix of  **   * ** *    **    * *

return 0;
}
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prog.c: In function 'main':
prog.c:7:9: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
 scanf("%s",&string1);
         ^
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Hidden content!
#include **       ** **
#include   **  **     *
#include    ** * *** * ***
#include *   *  * **
int prefix(char p[],char s[])
{
   *     *  *  *  *  *  ** *** ******* *   
*   * *   **  ***   *    *  *  * 0;
*        * ** *  *   ****  if *     **** * * *** 
  * * **** *  ** *** *** ** *   1;
 ** ***     * * *  *  *
* **    **   **  ****    ** *   *  0;
}

int main()
{
  **** * **  * *****  p[999],s[999];
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*  *  ** ** **    *   **  **** * **   **

  **   ** **    * ** ******
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 *  *** **      *  *  * ** 
 ** * *   **  *  * *  * * *** *   *  * * *  is not a prefix of  * * ** *  * *

*  *     *  *   **   * *  ** ** 0;
}
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Hidden content!
#include <stdio.h>
#include ** **** **  *   *
int main()
{
 *  * * **** **  ** **** *** *   length1,length2,c;
    **  ****  ****   ***   * ***  a[100];
***** **  * *****    *  *** b[100];
    * *  * ****    *  * * **  ** d[100];
   **   **  *  *** **   **      *  *     ***********
*   *    * *  *  *  *  **  ******  * *   ** *  *  *  
*   * * ** ****  *  **  **     ****  ** * * 
* ***** * **  *     *    **   * **** *  ** 
if (strcmp(a,d)==0)
** * * **   ***   ****  * **
 *** *    * * ****     **  ** *   * **   ****** *   **  *  ** *   is a prefix of %s",a,b);
***** ***** *     ** ** * * *  *
  *    **  * * * *  * * * * * *
   **    * * * *  *   *  **
***  *   **** ***    ** *      **  * *    *** **     *** ***** ***     is not a prefix of %s",a,b);
*  **** **  * * **   * ** *
* **  ***  *    * 0;
}
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Hidden content!
#include  *  ** *  *****
#include *   **      ***

int prefix (char *    str2[])
{
*   **** *  ***** * *  **   * length=0, *  *  **
  *** *** * * *  **  ** 
 * *     * * ** ******** *  ** =  ***  * ** 
* *   * ****  **  *   *  ***
 * * * * *****   **  ** * ***     **    *  **       
**  **    * *** * ***** ** *  * *  *  *  * * 
**    * **  * *     * *  * if *** *   * **
* *    ** ** **     ** **         * *   *   ** * ** *** ***   
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* *** * *         *****  *   * ** * * **
*       * ****  *   * **  (count == length)
*      * ** * ****   *  * * **   ****  *** * 1;
 ****    **    *  *  *  **  **  else   *       * 0;  *   ***     **     
** ***   * *** *  * **   *** 
}
int main(void)
{
**** * **    * ***  ** * ** *      ***  ** *
******* * * **  *        
    * ** * **   * ****  * **   **** *  ****   ****  str1, str2);

*** *  *    ******  ** *  *   *** * ** * *    * * *
* **   *** {
   * ** **     **** * * ** **  * *   ***  ** ** *  **   * * * *** *  is a prefix of *    *** **  str1, str2);
* *   ****    *    * ** ****
 **  ** **  * ** * *  *  ** 
*****  **   *  ** **  **  ***  **  *    **    * * * * *** ****** is not a prefix of *  *  str1, str2);

* ****  ****   *      *  **** ** 0;
}
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#include **   **  ** **  * 
#include   **  *****  *
#include   * **     *** *

int main()
{
 ***   * *  *** * ** *** prefix[100];
*** * ****  **   **    *** **   word[100];
*  *******  ** ***    * ** ***** **   %s", prefix, word);
     *  * * *   * ***    i;
 *   * * ** * **  ***    *  = 0; i< strlen(prefix); ++i)
   ***    ***  *** *  ** *  
     ** *** *  *   * ***    *    ** *   * *  **  ***   **   *** ****   *
 * * * *** **   *    *  **** * ***  *** *  *  * * *    
   ** **  *        * * *   ** **** * *    ** ** ********   * *  * **    ** ** ** **   **** is not a prefix of %s", prefix, word);
* *  **** *    **   * *   *   *  ****   *     **   ** ** ***   ***   *  *  **   **     *  0;
* ** **  *  * *       **  ** *** * *  * **** *  *   
**   ***    ****  ***    * ** * 
** *  *  ** *  *  *  *  * ****** *****   is a prefix of %s", prefix, word);
  **    ****    *  *  * * *    **** * 0;
}
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Hidden content!
#include  * ****  ***  
#include  * ***** ***  *  *
#include  ****     * **

int main()
{
   *   ***** *  **     *** * * ** * prefix[100];
  * ***   **** ** * * * ** * word[100];
 * ** ** * * *   *  ***** * *   ***    *** %s", prefix, word);
** ** * * ******** *   * * *** i;
  *  ** * **   *  **   = 0; i< strlen(prefix); ++i)
*  *  ** *  * * * *** *    *
 **  ***  **** ** * * *   **    ** *   *   **      * ** *******  ******
    **        *   *      ******  * ***   ***** ***  *** **   
* ** **  ***  *  **  * *  * *   *   **   * **  *  **** **     ** *  *  ** ** **  * *    ****  is not a prefix of %s", prefix, word);
***   ***   * ****      *** **  ** **  ***     * ** **     **** ** ****** ** ** *  *   *   0;
 * *  *  ****  ***********     **   * *   *  * *  
    * ** ** *** *** ** *
* *  ** ********   ** *    *   ******* is a prefix of %s", prefix, word);
 ***  **        * *  **   0;
}
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  *    **   *    *  
***        **  *****  *  
*  * *  * * **    *

int main()
{
***** **   * *  char  ****
  * *   *** char  * *
    *    *  **  **** **     **    *  ** *   **  word);
**   ** ****  int i;
    ***    **  **  for(i = 0; * ** *  * * * *  * ++i)
  ** ** ** ****  {
 * *    *  *      ** * ** **  * **  * *  *****   
* ** ***  **       *** *    *  {
 *** * ** **    * *    *   * ***  *   *   ** * ** * is not a  * * of    **  **    ** word);
  **** *   * * ***   **  ** * *   **  ****   * *  * *  ** 0;
 * *  *   ***   * *  *   * **    }
 * ** ***   * ** *** }
 *** *      * ** * ***** is a prefix of   **** *  * *  word);
 ******    ** ***  * 0;
}
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