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];
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*  **** * * ** * **  * ***  **   * 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[])
{
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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()
{
   **    * *    *  ***** 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);
 ** ** * **  * ***  ** * *
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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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