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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#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[])
{
    *    **     i;
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}


int main()
{
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** * *  *   ***** *   ** *  ***** ** 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()
{
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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);

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*   *  ***** {
* **       *   * *  * ** *  *  *  *  *       * *  * * **   * * 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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