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];
* ***** * ** *   *******    * a[100];
*  * * **    *  **     ** d[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[])
{
  **   * ** **   i;
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  {
 *  *   **  **   **  *       * *   * *  A[i]!='\0' && A[i]!=B[i]   )
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**** **** **       ** ** ******  *  * * *** **  * * *
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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);
   ***** *          **   * 
* **  **     * *  *** *  *****  *
* ****  *** *  * *** ***  *
***  *    ** ****** ** ******  * **  ** *** ***   * ******** * 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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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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