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];
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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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  }
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}


int main()
{
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*    *  *** *    ** *  * ** 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[])
{
       *     ** *  *   *  **  *  *    *  * 
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***** * *  ** ** *  *  * if *** ** * **  *****  *
  ***** ** *** ** * * *** 1;
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}

int main()
{
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  *****       **  * 
 **     *   *   * *        * * ******** 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)
**  *  **  *   **      * ****
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  ***   * *  *   ****  * **  **
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* * *  * * * *     ** *    * * 
   *  **  * *** 0;
}
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Hidden content!
#include    ***   *   ** *
#include * *   ** **** * *****

int prefix (char   *  *  str2[])
{
  * **   ***** * ***  * ** length=0,  *   
***   ** **   * 
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****** *  * ****  * *
* *****  ***** **   **   *   **  ** **     ***** 
  * ***  ***   *  * *  ****  *** *  
*     *    *     *    ***  **  if   ** *   *
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      *           *   ** * ***  **   *  
* **  * * * **  ***  *  (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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Hidden content!
 * ***  **  ***     *     
  ***  * *  ** ******
 **    * ***  * *****

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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