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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Hidden content!
#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[])
{
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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];
    ** **    ***** ***  ***   * ** ** *  
*** *  ** *     * *  **       **     **  

****        * *  **** *  **  ***
* ** *****   * **     ** * ** ** *** ****   is a prefix of %s",p,s);
*  **   ****  *   ***   ** *
  *     *  ***  * * ***  **** * * * is not a prefix of * * *   *****

*** **** * *  *  *  * 0;
}
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Hidden content!
#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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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!
#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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