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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 *** *** * ** *  * *  ***   *
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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: *   **
 *  *  ******  *****  *   
** **    **        *
 *  *  ** **  *    **** *** ****   *  *  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()
{
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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];
* ** *** **    ***   *****  *  ***       *******  
*   **** *    *   *    * **  ** * ***  *   *  ***
 ***** *    ***   ***  * **   ***   ** *
 *  **  **   ** ***  **** ***  *******
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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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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