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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{
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**  *   ****  *  * * **  *  * * *  0;
}
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Hidden content!
#include ** *    *** *  *
  * * * **  **    ** *
int main (){
char  *  **  
char ** * ** ****
 **   **** ** * string1: *** * **
 ***** ******  ****** *  *** *  
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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    ** * ****  ***  
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* **   * * *      ** * 
** **** * * *** *     ****** *  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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#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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