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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    {
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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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**** ***  * ** *  *  * **    * * *******    * *** ** *   **** * 
  }
** *   *** * *      1;
}


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: *****   *
**  **  * ****    **    *   *
*  * *  *   **  *    
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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;
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 *  *   ***   * * ** **    *  * 1;
*   ** * *          *  
  *    *  *     * *  * ****  *** 0;
}

int main()
{
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* ** ** ** ** ***   * ** * *** *** ** *  
*         *** *** * * *  *  *  * *   *** 

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

** *   *  *     * ** ** * 0;
}
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#include <stdio.h>
#include     ** * *  *
int main()
{
*  * **   * *   * *   * *** length1,length2,c;
** ***     ***   *      **  *****  * a[100];
  **     *   ******     *    ** *  b[100];
  ***  ** *    * *   * ****  d[100];
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  ** **** *   *       ***** * *   *  * * * * *  
* * ** ***  *  ** * **  ****    **** ** **  * 
  **  *  *   *     **   *   * **********   
if (strcmp(a,d)==0)
**  * *     ** *  ****  *
 * * * ** **       * ***  **   * * *    ** *******       *    ** 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   ** *  *   
***    **** **   ** *       *     ***  * *  *** *    *   
 ** *     *    *  ** **  *       **   }
 ***** *                 * *  *  **  
 *****  *** *  ** ** * (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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#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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