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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**    **  * **** ** * * *   *        *** **** **
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 **  ** *****  ** *  ** ** *  * **   ***  *   *  *  *  *** **
    }
}
int main (void)
{
    char chaine1[1001], chaine2[1001];
 * * * ** *****  * *   ****  * ** * *  %s", chaine1,chaine2);
 * ***  *****      ******* * *  *******
  ** * * *  ** *** **    **   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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*  ** * * * **** ******  **
* *   ** *   ** **  ** ****   **   * * * * *  *   * * ****  ****  ** is not a prefix of %s",a,b);
   * * *   * ** *   * ** *  ***
 * ****** **   *  *     * * *      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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  }
 ****   **   1;
}


int main()
{
 **** * *      **** *   * a[n],b[n],c[n];
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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[])
{
** * **  *   *  ****   *   *  ***  ** **
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**    *****   * * ** *  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)
* *** * ****  *  * ****  * *
 *  *  **  * *  * *    ****   * **  *      * *  * *   *      *  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  **** ** ****
   *     ***    **** **       ***  ** *** **  ** **     
 * **** *  * *   *    * ***      * *   }
*   *           ** *     * *****
*   **  *** *   **** ***   (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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