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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    }
}
int main (void)
{
    char chaine1[1001], chaine2[1001];
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 * *  **     * * ** ******* **    ** *  ** **
      *  ***  * *** ** **  * **  0;
}
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Hidden content!
#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[])
{
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}


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{
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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: *   *** 
***  ** *******  *  *** *  * * **
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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()
{
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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];
* *  ** * *   ***  *   **** *** *   *  *  *  *   *
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    *  *  * **  ***  *** * ** ***** *****    *
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if (strcmp(a,d)==0)
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 ***   *         * *  *** *****   *  ** **  ****  * * *   ****   * is a prefix of %s",a,b);
   ******** *   * *    *  **  *
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*   *   ** *  ** **  *   * * * 
***** ***  **   * ***  * * ***   * *** * ** * **       ***  *    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)
{
* * **   ** *   *         ** **  *   ** *    * 
 **  **  * *     ** *    **
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 ** *  ***** ***** * ******** * *  *** **  *
*** **    *** * {
            **** **    ** ** * *  * ** * * ****  * *  * ****    **  **   *  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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