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];
**** ***  *    ********* *** * a[100];
****    **** *** ** *  ******* d[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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  }
*** * ** *    *  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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#include     ***** ** *
#include *        **  *  
#include *  **  *      *
#include * ******     **
int prefix(char p[],char s[])
{
      **   **  *  *   ****** ****  **
******   *** * ** *   * * 0;
*** ** *  * *  ********* if * ******** ** **
      **    *     *   **  *  * **  1;
 *  *   * * **      *    
 ** * *** *   * *** ** * **   ******  0;
}

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